If you live in a warmer climate – zone 6 and above – you can treat your dahlias as perennials. This means you could avoid digging them up and replanting every year, which could save a lot of time an energy. Though not the norm, there are even successful flower farms that choose to overwinter dahlias. But alas, our homestead is in a colder climate and we most certainly have to dig up our tubers every year. On the bright side, this means dividing and multiplying our stock every year.

Once you know when to plant your dahlia tubers, you can work backwards and choose the best time to divide. Generally you’ll want to divide in early spring and then plant out after the last frost date. For us in the zone 4b mountains of Colorado, we generally divide in late April, sprout in May, and plant in June. Okay, so let’s get to the details on how to divide dahlia tubers.

Understanding Dahlias and Their Growth Cycle

Before you dive into dividing your dahlia tubers, it’s important to grasp their unique growth cycle and how variety affects the process. Dahlias are perennials that provide vibrant colors to your garden from midsummer through fall.

The Life Cycle of a Dahlia Plant

Dahlias thrive in cool, moist climates and typically begin their growth cycle in the spring. As the ground warms, new shoots emerge from the tubers, which are the plant’s underground storage structures. Through the summer, these shoots develop into sturdy stems that burst into flowers in a rainbow of colors. Once blooms have graced your garden, dahlias continue to flourish until the first frost of fall signals the end of their growing season.

• Spring: Tubers wake and shoots appear.
• Summer: Growth peaks, flowers bloom.
• Fall: Growth slows; blooms fade after first frost.

How to Divide Dahlia Tubers

With your tubers prepared, you can proceed with the division. Follow these steps:

Identify the Eyes: These are found at the base of the last year’s stem. Each section you cut will need at least one “eye” to grow into a new plant.

Slice the Clump: Position your sharp knife at the edge of the clump and cut through the tubers, ensuring each division has at least one eye.

• Cutting Tips:
  • Make clean, single cuts rather than sawing back and forth.
  • Avoid cutting too closely to the eyes to prevent damage.

Sprouting Dahlia Tubers

As spring approaches, begin to prepare your dahlia tubers for planting. Check the condition of each tuber and discard any that show signs of disease or rot. Before planting, allow the tubers to gradually acclimate to the warmer temperatures by bringing them into a slightly warmer area if they’ve been in a particularly cool storage.

We have a very short season and prefer to sprout our dahlia tubers before planting. This allows us to take cuttings and also means we’ll get blooms a bit earlier in the season, which is great since we sell at the farmer’s market.

After dividing the tubers we simply place each one in a container and fill with dirt up to the neck. You’ll want to keep the eye above the soil level.

Planting Dahlias Outdoors

Plant dahlia tubers when the soil has warmed and there’s no longer a risk of frost. The soil temperature should ideally be above 60°F (15°C).

Dig a trench about 6-inches deep on their side. Aim for about 12-inches between tubers. As you can see in the video below, you can plant sprouted tubers this way or un-sprouted.

By following these detailed care steps, you’ll set your divided dahlias up for a robust and beautiful display in your garden.

The post How to Divide Dahlia Tubers: A Step-by-Step Guide appeared first on Wild Mountain Homestead.

The answer is a resounding yes! After several years of growing dahlias, here’s what I’ve learned about growing these gorgeous blooms in Colorado (or any other colder climate).

Key Takeaways

• Dahlias can thrive in Colorado with proper care and suitable varieties.
• Planting at the appropriate time and providing proper care is crucial for success.
• Expanding your dahlia garden and experimenting with different varieties can enhance your landscape and improve your gardening skills.

How to Grow Dahlias in Colorado

When it comes to growing dahlias in Colorado, there are several factors to consider in order to achieve the best results. These factors include the weather, temperature, light, soil, and hardiness zones of your planting area.

Colorado’s climate can be quite varied, so it’s important to pay close attention to the temperature in your specific area to know when to plant your dahlias. Dahlias prefer warmer weather and will not tolerate frost. Therefore, it’s recommended that you plant your dahlia tubers only when night temperatures consistently stay above 55°F (13°C). This usually occurs between mid-May and early June in most parts of Colorado. We generally divide our dahlia tubers in April.

At our farm we usually pre-sprout tubers in the greenhouse in May and then plant them outdoors at the beginning of June. You can certainly skip the sprouting process, but it does give the tubers a head start if your growing season is short.

In terms of light, dahlias generally prefer a sheltered location with morning sun exposure. Some varieties can handle full sun, but most will thrive in partial shade due to Colorado’s strong sunshine. Ensure your chosen location receives at least 6 hours of sunlight daily in order to promote optimal growth and flowering.

Soil plays a significant role in the success of your dahlias. They prefer well-draining soil with a slightly acidic pH level of around 6.0 to 6.5. Colorado’s soils can vary from clay-heavy to sandy, so it’s crucial to amend your soil to meet these requirements. Adding organic matter like compost or well-rotted manure can help improve soil texture and drainage, creating a suitable environment for dahlia growth.

Lastly, you may be wondering are dahlias annuals or perennials? Meaning, do you have to plant them every year, or do they just stay in the ground and come back each season?

The answer is, it depends on your climate. Dahlias are generally hardy in zones 8 to 11 but can be grown as annuals in colder zones if proper care is taken to protect the tubers from freezing.

The hardiness zones in Colorado, generally range from USDA zones 3 to 7. If you live in the warmest conditions you could successfully overwinter dahlias in zones 6b/7. But for everyone else you’ll want to plan on digging up your tubers each fall and replanting in the spring. I grumble about this chore every year, but when the blooms fill the garden in late summer I’m glad I made the effort!

Planting Dahlias

Before planting, inspect the tubers for any signs of rot or damage, and make sure they are firm to the touch.

When selecting a planting location, choose a spot in your garden with well-draining soil and plenty of sunlight. Dahlias thrive in areas that receive at least 6-8 hours of direct sunlight per day. If you’re growing dahlias in containers, use pots with drainage holes and fill them with good quality potting mix.

Dig planting holes that are about 6-8 inches deep for standard-sized dahlias, and adjust the depth for smaller or larger varieties accordingly. In Colorado, it’s often helpful to amend your garden soil with organic matter, like compost, to improve drainage and nutrient content.

Place the dahlia tubers in the planting hole with the eye (the small bud on the tuber) facing upward. Gently cover the tuber with soil, leaving about 2-4 inches of soil on top. If sprouted, the new growth should just barely poke through the surface.

Spacing between plants depends on the size of the dahlia variety. I plant my dahlias about 10 -12 inches apart. You want to ensure the plants have plenty of sun and airflow, but since it’s so dry in Colorado I’ve never had any problem planting them closely.

Be sure to water the tubers only after the sprouts have appeared above the soil surface. Overwatering before sprouting can cause rot and impede the growth of your dahlias. Once they’ve started to grow, keep the soil consistently moist but not waterlogged.

Dahlia Care and Cultivation

Cultivating dahlias in Colorado is a rewarding experience as long as you provide the appropriate care. To ensure your dahlias thrive, follow these care and cultivation tips.

Soil Preparation: Prepare the soil with 6 to 8 inches of well-draining soil, rich in organic matter. A proper foundation will encourage healthy growth.

Planting: Plant your dahlia tubers flat on their side, 6 inches deep, and 18-24 inches apart. This spacing is necessary because the plants can grow quite large, potentially reaching over 5 feet tall.

Watering: Dahlias require consistent moisture, so water deeply once or twice a week, depending on your local climate, especially during dry periods. Keep the soil moist, but avoid overwatering to prevent diseases.

Fertilizing: Dahlias benefit from a balanced fertilizer with low nitrogen levels, as too much nitrogen promotes excessive green growth at the expense of blooming. Apply a 5-10-10 (N-P-K) fertilizer once a month, according to the package instructions.

Pinching: When your dahlia plants reach around a foot (30.5 cm) high, pinch off the top few inches to encourage branching and a bushier growth habit. This will lead to more blooms.

Staking: Taller dahlias require support to prevent falling over. Provide strong stakes at the time of planting or soon after to avoid disturbing the roots.

Deadheading: Regularly remove spent flowers to keep your dahlias looking their best and to promote continuous blooming throughout the growing season.

Midsummer Care: To keep plants healthy, apply a layer of mulch around your dahlias to conserves moisture and control weeds.

Fall Care: In the fall, after the first frost, cut the stems back to 4-6 inches above the ground and carefully dig up the tubers to store them for winter.

By following these guidelines, you can confidently and successfully grow beautiful dahlias in Colorado’s unique climate. With proper care, your dahlias will provide stunning blooms and enhance the overall beauty of your garden.

Dahlias for Different Purposes

When deciding to grow dahlias in Colorado, it’s essential to consider the purpose for which you are planting them. Dahlias can serve various purposes in your garden, such as cut flowers, borders, or simply for their attractive appearance. Here are some factors to keep in mind when growing dahlias for different purposes:

Cut Flowers: If your primary goal is to grow dahlias for cut flowers, choose varieties with long stems and good vase life. These types will produce beautiful and long-lasting arrangements, brightening up your space and impressing your guests. Remember to harvest the flowers early in the morning or late in the day and place them in water immediately, as this will prolong their shelf life.

Border Dahlias: For a vibrant and varied border, consider planting different colors and forms of dahlias. Their size and branching habits make them an excellent choice to fill gaps, create visual interest, and complement other perennials or annuals in your garden. With their wide range of colors, including red, orange, yellow, pink, and white, dahlias will bring life and diversity to any garden border.

Size and Form: Dahlias are available in a variety of sizes and forms, from dwarf plants that grow to just 12 inches tall to statuesque varieties that can reach up to six feet. Be mindful of their mature size when selecting the perfect spot for them in your garden. Larger varieties are ideal for creating focal points or anchoring the back of a mixed border, while smaller plants work well in containers or along walkways.

Purchasing Dahlias

Dahlia tubers are in hot demand these days and it can be challenging to get quality tubers. Be sure to sign up for email lists and plan to shop the day they are released. These are three farms I have shopped from that offer a great, high-quality selection:

• Arrowhead Dahlias in Colorado
• The Flower Hat in Montana
• Coseytown Flowers in Pennsylvania

FAQ: How to Grow Dahlias in Colorado

When should dahlia tubers be planted in Colorado?

Dahlia tubers should be planted in Colorado after the last frost has passed, typically in mid-May. Make sure to plant them flat on their side, 6″ deep, and 18-24″ apart to ensure the proper growth and bloom of your dahlia plants.

What are the best practices for growing dahlias in pots in Colorado?

When growing dahlias in pots in Colorado, use a good quality potting soil, and ensure the pots have drainage holes to prevent waterlogging. Position the pots in a location with part to full sun exposure. Water regularly at soil level, rather than overhead, to keep the soil evenly moist. Fertilize the plants with a regular application of organic water-soluble plant food to support their growth and blossoming.

How can I overwinter dahlia tubers in Colorado?

To overwinter dahlia tubers in Colorado, dig them up after the first hard frost. Carefully remove excess soil and let the tubers dry for a day or two. Wrap the tubers in newspapers or place them in plastic bags containing slightly moistened peat moss or vermiculite to prevent them from drying out completely. Store the tubers in a cool, dark place at temperatures between 40-50°F (4-10°C). Check the tubers periodically throughout the winter for signs of rot or excessive drying.

Do dahlias return every year in Colorado?

Dahlias are perennial plants in warm climates, so they have the potential to return every year. However, in colder climates like Colorado, they may not survive harsh winters unless their tubers are properly overwintered as mentioned above. Replant the tubers in spring after the last frost to enjoy their beautiful blooms year after year.

What are some useful dahlia growing tips specific to Colorado?

Given Colorado’s unique climate, consider these tips for growing dahlias:

1. Amend native soil with compost to ensure proper drainage and nutrient availability.
2. Provide taller dahlia plants with stakes or supports to help them withstand Colorado’s strong winds.
3. Be prepared to protect plants from hailstorms by covering them with a cloth or mesh protection.
4. Choose dahlia varieties that are suited to higher elevations or more tolerant of variable weather conditions.
5. Keep an eye out for pests, such as aphids or spider mites, and treat them promptly to prevent damage to your plants.

More Dahlia Care Articles

Looking for more info on growing dahlias? Check out these articles:

• The Best Cut Flower Dahlias
• How to Grow Dahlias from Seed
• Sprouting Dahlias

The post How to Grow Dahlias in Colorado appeared first on Wild Mountain Homestead.

I’ve been growing dahlias on our homestead for years now. They are always extremely popular with customers at the farmers market and with florists, too.

When looking for a good cut flower I like to consider vase life, sturdiness of petals, and color. Some flowers are amazing in the garden, but a hassle in an arrangement. Dahlias don’t have the longest vase life ever, but they do well enough lasting 3-5 days.

Let’s get to it – and reveal the best cut flower dahlias.

Best Cut Flower Dahlias

When it comes to choosing the best dahlias for cut flowers, I’ve found a few varieties that really stand out.

One of the most popular and beloved varieties for cut flowers is the Café au Lait dahlia. Its large, creamy blooms blend well with other flowers, making it perfect for bouquets and arrangements. The color can vary from blush pink to a warmer cream tone, adding even more versatility to Café au Lait arrangements.

Another great variety for cut flowers is Crichton Honey. This dahlia features warm, honey-gold petals that form a stunning, fully double flower head. The golden tones of Crichton Honey pair wonderfully with autumnal shades, making it an excellent choice for fall arrangements.

Cornel Bronze is a striking dahlia variety with deep, bronzed orange petals. Its rich hues ensure it will stand out in any floral design, while its medium-sized blooms make it an ideal addition to both larger and smaller arrangements.

If you’re looking for something with a bit more of a classic look, the Frank Holmes dahlia might be the perfect option for you. These dahlias feature large, deep red blooms with a hint of darker tones on the petals’ tips. Frank Holmes dahlias are perfect for creating elegant and sophisticated floral designs.

Finally, for something a bit different, the Crazy Legs dahlia variety might be just what you’re looking for. With a unique, spiky appearance that adds texture to any arrangement, these dahlias have a fun, punk-rock vibe to them. The petals are a vivid magenta color, making them an eye-catching addition to any bouquet or centerpiece.

All of these dahlia varieties have their unique charm and beauty, making them ideal additions to any cut flower garden. By including them in your floral arrangements, you’re sure to create stunning, unforgettable designs that will delight your friends, family, and clients alike.

Why Dahlias Make Great Cut Flowers

Color and Form

I’ve always found that dahlias are absolutely stunning flowers when it comes to color and form. They come in a diverse range of hues from soft pastels to vibrant, intense shades, making them suitable for any setting. The variety of shapes, from spiky cactus types to elegant ball dahlias, allows for endless creative arrangements.

Size Relevance

In my experience, dahlias can produce impressive blooms, which vary greatly in size. Some can be a few inches in diameter, while others can be as big as a dinner plate. This variation in sizes lets me create unique and eye-catching cut flower displays that easily make a statement in any room.

Bloom Periodicity

I find that one of the most remarkable aspects of dahlias is their bloom periodicity. They can bloom almost continually, and when I cut them, they produce even more flowers. This abundance of blooms ensures that I always have a steady supply of colorful cut flowers throughout their season.

Vase Life

While dahlias have a relatively short vase life (3-5 days), they are still great for use in cut flower arrangements. Their short life span makes them perfect event flowers as opposed to bouquet flowers. I enjoy using them in my floral designs for special occasions, where they add charm and elegance to the decor.

Attracting Bees and Butterflies

Finally, I appreciate the fact that dahlias are not only beautiful but also beneficial to the environment. They attract bees and butterflies, which help with pollination in the garden. This makes me feel good about using dahlias as cut flowers, knowing that they are contributing to the well-being of these essential pollinators.

Growing Dahlias for Cut Flowers

Planting Requirements

In my experience, growing dahlias for cut flowers is not too difficult. To get the best blooms for your bouquets, you should plant dahlia tubers in well-draining, fertile soil. You can definitely grow dahlias from seed, but if you want an exact-match plant tubers.

I like to sprout dahlia tubers because I have a particularly short growing season. It’s just one of the parts of living in the mountains I’ve had to adjust to.

But, if you’re zone 5 and warmer you can certainly just plant directly in the ground. Dahlias should be planted about 4-6 inches deep and 18-24 inches apart from each other. You’ll want to consider important things like your location and growing zone to determine exactly when to plant dahlias.

The USDA Planting Zone Map isn’t a foolproof guide, but it’s a great starting point to know your zone.

Watering Schedule

I’ve found that dahlias have a moderate need for water. When they’re first planted and starting to grow, I make sure to give them a good deep watering to help them establish their roots. Once they’re established, I stick to a regular watering schedule of about 1 to 1.5 inches of water per week, making sure to water deeply so it reaches the tubers. Be careful not to overwater or underwater your dahlias, as this can lead to poor flower production and issues with pests and diseases.

Sunlight Requirement

From my experience, dahlias thrive in areas with full sun, meaning they need at least 6-8 hours of direct sunlight daily for optimum growth and flower production. Make sure to plant them in a sunny spot in your garden, as insufficient light can cause weak plants and fewer blooms.

Growing from Seed or Tubers

I’ve grown dahlias both from seeds and tubers. Starting with seeds can be more economical, but it takes longer to get flowers. Plant the seeds indoors about 6-8 weeks before your last expected frost date. Transplant the seedlings once they are about 3 inches tall and after the threat of frost has passed.

On the other hand, growing dahlias from tubers is faster. I usually plant tubers outside after the last frost date in my area and when the soil temperature is above 60°F. Make sure the tubers have at least one “eye” (the growing point) when you plant them.

Ideal Climate

Although dahlias can be grown in various climates, they prefer consistent warm weather. In colder climates, I suggest planting them in containers or using strategies like mulching to protect the tubers from frost. In hotter climates, provide dahlias with some afternoon shade and ample water to protect them from scorching sun and heat stress.

Beating Pests and Diseases

To keep my dahlias looking their best, I make it a priority to prevent pests and diseases. I always choose disease-resistant varieties, provide proper care, and avoid planting dahlias in the same spot year after year. Watch out for common pests like slugs, snails, and aphids. For natural pest control methods, you can use barriers, traps, or introduce beneficial insects like ladybugs to your garden. Regularly monitor your plants for signs of disease and treat them as needed to enjoy beautiful and healthy cut flower dahlias throughout the season.

Dahlia Cut Flowers: Harvesting & Arranging

When to Cut Dahlias

In my experience, the best time to cut dahlias is in the morning or evening when temperatures are cooler. I wait for the buds to be about half-open, as they will continue to open in the vase. This ensures the longest possible vase life. Look for flowers with long, strong stems that are perfect for arrangements. Dahlias come in various colors such as red, yellow, cream, pink, and lavender, making them versatile additions to any bouquet.

Preparing Dahlias for a Vase

Before placing your dahlias in a vase, it’s essential to prepare them correctly. I usually follow these steps:

1. Remove extra foliage: Dahlias can have quite a lot of leaves along their long stems. I remove any foliage that would be below the waterline to reduce bacterial growth.
2. Cut at an angle: I always trim the stems at a 45-degree angle using a sharp, clean pair of scissors or pruners. This creates a larger surface area for water uptake and prevents the stem from sitting flat against the vase bottom.
3. Use clean water: Fill a clean vase with fresh, cool water and add flower food or a homemade solution to prolong the life of your dahlias.
4. Re-cut stems: As a final touch, I re-cut the stems underwater before putting them in the vase to ensure they take up water efficiently.

Arranging Dahlias with Other Flowers

Dahlias look stunning when combined with other flowers, thanks to their impressive size, striking colors, and intricate petal structures. I try to use complementary flowers to enhance the beauty of the dahlias in my arrangements. Some of my favorite flowers to pair with dahlias include:

• Roses: Roses have a classic, romantic appearance that complements the boldness of dahlias. The combination of the two creates a luxurious, eye-catching arrangement.
• Lilies: The delicate and fragrant lilies add contrast in size and texture to a mixed arrangement with dahlias.
• Snapdragons: These tall, spiky flowers bring height to a dahlia bouquet, while their tubular, clustered blooms add another layer of interest.

When arranging dahlias in containers, I make sure to use vases or vessels with wide openings to accommodate their large blooms and long stems. Additionally, it’s helpful to arrange dahlias in groups of three or more, as they tend to look more pleasing in odd numbers.

Overall, dahlias are a delightful choice for cut flower arrangements, offering a palette of colors and a long vase life. By following these tips on harvesting, preparing, and arranging, you can create stunning bouquets and tabletop displays that highlight the beauty of these summer showstoppers.

Using Dahlias in Events

As a flower enthusiast, I have discovered that dahlias make an excellent choice for various events, including weddings and parties, due to their vibrant colors and stunning shapes. Here, I want to share my experience with using dahlias at these particular gatherings.

Dahlias for Weddings

When it comes to weddings, dahlias can truly enhance the overall theme and ambiance. They are perfect for creating exquisite bridal bouquets, centerpieces, and other floral arrangements. Some popular dahlia varieties for wedding scenes include:

• Café Au Lait: A favorite among brides for their soft, blush tones and large blooms.
• Labyrinth: A delicate, peachy-pink color with captivating, swirly petals.
• Cornel Bronze: Rich, deep-orange petals that add a touch of warmth to the wedding atmosphere.
• Sweet Nathalie: This is light pink, white dahlia is one of my all-time favorites and a strong grower.

With the right care, these event flowers can look stunning for the big day. Just remember that they have a short vase life of about 3-5 days, so dahlias are best used on the day of the wedding for optimal freshness.

Dahlias for Parties

Whether I’m throwing a birthday bash, a baby shower, or any other celebration, dahlias never fail to impress the guests. The sheer variety of colors and shapes available means there’s always a perfect dahlia to match the party’s theme. A few of my top picks for party dahlias are:

• Totally Tangerine: With daisy-shaped flowers and a vibrant, tangerine hue, this dahlia steals the attention.
• Crazy Love: A playful, white-and-pink bicolored variety that adds whimsy to any party decor.
• Jowey Mirella: This pompon type dahlia, with deep, burgundy petals, adds elegance to any affair.

To ensure the best results, I always cut dahlias early in the morning and place them in a clean vase filled with fresh water. Regardless of the occasion, dahlias are sure to bring a lively and impactful presence to any event.

Growing Dahlias in Pots and Containers

I absolutely love growing dahlias in my garden, but I’ve found that they also do quite well in pots and containers, making them a fantastic choice for a balcony or a small outdoor space. Dahlias are hardy plants and can adapt to various conditions, so whether you have a large garden or a small patio (or something in-between) I always recommend growing dahlias.

Unique Dahlia Types

When it comes to cut flower dahlias, I’ve come across a variety of unique types that can add some flair to any arrangement. Dinner plate dahlias, for example, are one of the most striking types, with their enormous blooms. Though the flowers may be too large for some arrangements, their presence can make a bold statement.

Cactus dahlias are another interesting type with their spiky petals and captivating appearance. These dahlias come in a diverse range of colors, including beautiful shades of mauve, creamy yellow, and everything in between.

As for specific varieties to consider, let me share a few of my personal favorites. First up is Intrigue, a striking dahlia with rich, reddish-purple petals and a stunning presence. Another lovely variety is Maarn, which showcases soft, lavender hues that bring a touch of elegance to any bouquet.

If you’re in search of something with warm colors, I highly recommend Cornel. This dahlia variety features dark, cherry-red petals that resemble luxurious velvet – definitely a top choice for a vibrant touch. In case you prefer more muted tones, Cafe au Lait is a fantastic option. Its large, creamy blooms are a perfect addition to any garden or flower arrangement.

For something truly unique, look no further than Crazy Legs. This variety has fringed petals that give a fun, playful appearance, and it comes in a variety of colors, showing off its distinct beauty.

FAQ: Best Dahlia Cut Flowers

The post Best Cut Flower Dahlias: Your Ultimate Guide to Stunning Blooms appeared first on Wild Mountain Homestead.

As a gardener, flower farmer, and homesteader, dahlias are among my favorite flowers. They are beloved my customers and florists, have a long vase life, and come in a wide array of colors and forms (if you’re looking for a light, blush dahlia it’s hard to beat Sweet Nathalie).

Dahlias make amazing cut flowers and look stunning in the garden. When to plan dahlias depends largely on your location, climate, and growing conditions. In this comprehensive guide, we will explore the optimal planting time for dahlias, as well as provide helpful tips on caring for these magnificent flowers throughout the season. Read on to start growing now.

Understanding Dahlia Growth Habits

Before delving into the specifics of when to plant dahlia bulbs, it’s important to understand the growth habits of these flowers. Dahlias are fast-growing plants that produce bushy foliage and bloom in their first season. Their tubers, which are underground storage organs, play a vital role in their growth and development.

Determining the Best Planting Time

1. Consider your USDA Hardiness Zone: The USDA Hardiness Zone is a useful tool in determining the right time to plant dahlia bulbs. Dahlias are tender perennials in their native warm climate of Mexico. In the United States, they are considered perennials in USDA Hardiness Zones 8 and higher. However, in colder regions (zones 7 and lower), dahlias are often treated as annuals.
2. Check your average last frost date: Another important factor to consider is the average date of the last frost in your area. Dahlias are not frost-tolerant, so it’s crucial to wait until the danger of frost has passed before planting the bulbs. You can consult your local agricultural extension office or use online resources to find out the average last frost date for your region.
3. Temperature and soil conditions: Dahlias thrive in warm weather, so it’s best to wait until the soil temperature has reached at least 60 degrees Fahrenheit before planting the bulbs. Cold soil can hinder their growth, so it’s important to ensure that the soil is warm enough for optimal development.

When to Plant Dahlia Bulbs: A Step-by-Step Guide

Now that you have a good understanding of when to plant dahlias, let’s dive into the step-by-step process of planting them in your garden.

1. Prepare the Soil

Before planting your dahlia bulbs, it’s essential to prepare the soil adequately. Dahlias prefer rich, well-drained soil with a slightly acidic pH level of around 6.5 to 7. If your soil is heavy or clay-like, you can amend it with sand, aged manure, or peat moss to improve its drainage.

2. Dig the Holes

Once the soil is prepared, dig holes for your dahlia bulbs. The depth of the holes should be around 4 to 5 inches. If you’re planting multiple bulbs, make sure to space them at least 1 to 2 feet apart to allow for proper growth and airflow.

3. Place the Bulbs

Gently place the dahlia bulbs in the holes with the points (or eyes) facing up. The eyes are small, bud-like protrusions on the tubers from which shoots will emerge. Cover the bulbs with 1 to 3 inches of soil, ensuring that they are well-supported and stable.

4. Watering and Fertilizing

After planting the dahlia bulbs, it’s crucial to provide them with proper watering and fertilization to promote healthy growth and blooming. Here are some key points to keep in mind:

• Watering: Water the newly planted bulbs thoroughly, making sure the soil is evenly moist but not waterlogged. Avoid overwatering, as soggy soil can lead to rotting tubers. Once the dahlias start sprouting, water as needed when the soil has dried out. It’s best to water near the soil surface and avoid getting the leaves wet to prevent disease.
• Fertilizing: Dahlias benefit from a fertilizer that is high in potassium (K) and phosphorus (P) but low in nitrogen (N). Look for a fertilizer with a balanced NPK ratio, such as 5-10-10, 10-20-20, or 0-0-10. Apply the fertilizer when planting the bulbs and once a month before flowering begins. This will encourage bud growth and maximize flower yield.

5. Mulching and Protection

In hot and dry areas, mulching can help retain moisture and regulate soil temperature. However, in most regions, it’s recommended to skip mulching to allow the soil to stay warm and the foliage to remain dry. If there is a risk of late spring frosts, you can protect your dahlias by covering them with a frost cloth or similar material.

Caring for Dahlias Throughout the Season

Planting dahlias is just the beginning of your journey with these beautiful flowers. To ensure their healthy growth and abundant blooming, it’s essential to provide proper care throughout the season. Here are some key tips:

1. Watering: Dahlias require regular watering, especially during dry periods. Water deeply, ensuring that the soil is evenly moist. Avoid overhead watering, as it can lead to disease. Watering in the morning or early evening is best to minimize water evaporation.
2. Staking and Support: As dahlias grow, they may require staking or support to prevent bending or breaking of the stems. Install stakes or cages around the plants early in the season to provide support as they grow taller.
3. Deadheading and Pruning: Deadheading, or removing spent flowers, encourages continuous blooming. Additionally, pruning can help control the size and shape of the plants. Remove any damaged or diseased foliage and trim back excessive growth to maintain a tidy appearance.
4. Pest and Disease Control: Keep an eye out for common pests such as aphids, slugs, and snails. Regularly inspect the plants and take appropriate measures to control infestations. Additionally, provide adequate airflow and avoid overcrowding to prevent fungal diseases.
5. Winter Storage: In regions where dahlias are not hardy, it’s important to dig up the tubers before the first frost in fall. Clean the tubers, remove excess soil, and store them in a cool, dry place for the winter. Proper storage will ensure their survival and allow for replanting in the following season.

FAQ – When to Plant Dahlias

In Conclusion

Knowing when to plant dahlia bulbs is essential for their successful growth and blooming. By considering your USDA Hardiness Zone, average last frost date, and soil temperature, you can determine the optimal planting time for your region.

Follow the step-by-step planting guide and provide proper care throughout the season to enjoy the beauty and vibrancy of these magnificent flowers. With their wide range of colors and sizes, dahlias are sure to bring joy and excitement to your garden. Happy gardening!

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Anyone considering growing dahlias will ask this question at some point. The answer is it depends on where you live. My dahlias have to be treated very different than those grown in Southern California.

But don’t worry, I’m going to break it all down for you. In this guide will explore the answer to the question “are dahlias perennials or annuals?” and provide you with useful tips and advice on how to successfully grow these stunning blooms in your garden.

What Are Dahlias?

Dahlias are flowering plants native to Mexico and Central America, known for their vibrant colors and diverse forms. They belong to the Asteraceae family, which includes sunflowers, daisies, and chrysanthemums. With over 42 species and thousands of cultivars, dahlias offer a wide range of sizes, shapes, and colors to suit any garden style. They typically bloom from mid-summer to the first frost, providing a long-lasting display of color in your garden.

Are Dahlias Perennials or Annuals? (Or Tender Perennials?)

To understand if dahlias are perennials, it’s essential first to define these terms:

• Annuals are plants that complete their entire life cycle within a single growing season, meaning they grow, flower, produce seeds, and die within one year.
• Perennials are plants that live for at least three years, returning year after year. They often lose their above-soil foliage during the winter, while the roots stay alive under the soil.
• Tender perennials are plants native to warm climates that cannot survive cold winter temperatures without extra care. In their native range, they behave as perennials, but in colder regions, they may require additional protection or be treated as annuals.

So, are dahlias perennials? The answer depends on the region where you’re growing them. Dahlias are native to regions with warm year-round temperatures, such as Guatemala and Mexico. In these areas, they are considered true perennials. However, in colder climates, dahlias may be treated as annuals or tender perennials, depending on the specific growing conditions and care provided.

Are Dahlias Perennials or Annuals? Check Your USDA Hardiness Zone

The United States is divided into plant hardiness zones based on the average minimum winter temperatures. These zones help gardeners determine which plants are likely to thrive in their area. The answer to “are dahlias perennials” largely depends on your USDA hardiness zone:

• USDA Hardiness Zone 10: In this zone, temperatures rarely fall below 20 degrees F. Dahlias are true perennials here, and you can leave them in the ground over the winter. They will return in late spring or early summer.
• USDA Hardiness Zones 8–9: Dahlias can grow as perennials in these zones with some extra care. After the first frost, cut back the foliage and protect the tubers with several inches of mulch over the root zone.
• USDA Hardiness Zone 7: Dahlia plants may survive the winter in this zone if their tuberous roots are protected. They are considered tender perennials here, and it is generally safer to dig up and store the tubers over the winter.
• USDA Hardiness Zones 6 and lower: In these colder zones, dahlias are treated as annuals. You will need to dig up the tuberous roots after the late summer bloom, store them over the winter, and replant them in the spring.

Can Dahlias Be Grown as Perennials?

The good news for dahlia growers in warmer climate zones is that these flowers can be grown as perennials with proper care. Jennie Love overwinters dahlias in zone 6b/7. Even if you live in a colder region, you can take steps to protect your dahlias’ tuberous roots over the winter, allowing you to enjoy their stunning blooms year after year.

How to Protect Dahlias during Winter

Whether you live in a warmer or colder climate, taking certain precautions can help ensure that your dahlias return each year. Here are some tips for protecting your dahlias during the winter months:

1. For USDA Hardiness Zones 8–9: After the first frost, cut back the foliage to only a few inches tall. Then, apply several inches of mulch over the root zone. This will help insulate the dahlia tubers and protect them from freezing temperatures.
2. For USDA Hardiness Zone 7: If you want to try leaving your dahlias in the ground, cut back the foliage after the first frost and apply a thick layer of mulch over the root zone. However, it is generally safer to dig up and store the tubers over the winter.
3. For USDA Hardiness Zones 6 and lower: Dahlias must be treated as annuals in these regions, which means you will need to dig up the tuberous roots, store them over the winter, and replant them in the spring.

How to Dig and Store Dahlia Tubers

If you live in a colder climate and need to store your dahlia tubers over the winter, follow these steps:

1. After the first frost has killed the foliage, cut it back to a few inches tall.
2. Wait at least one week before disturbing the plants.
3. Using a spade or garden fork, carefully dig up the tuberous roots from the soil.
4. Place the dahlia tubers in a single layer in a shady location that’s safe from frost.
5. Let them dry for a few days, then trim the stems to two inches.
6. Place the tubers in a basket, paper bag, or cardboard box and fill it with vermiculite, sawdust, or slightly moist sand.
7. Store the tubers in a dry spot where temperatures remain between 45 and 50 degrees F and humidity is between 65 and 75 percent.

Check on your dahlia tubers a few times during the winter. If they look shriveled, mist them lightly with water. If any tubers start to soften or rot, cut off the affected area.

When to Plant Dahlias

Plant your dahlia tubers in late spring, once the danger of frost has passed and the soil reaches temperatures of 55 to 60 degrees F. Here in Colorado we plant our dahlias out the first week of June.

But to get a jump on the season, we start dahlias from seed in March. We also start sprouting Dahlias and taking cuttings throughout April. This is a great way to increase your stock and ensure your Dahlias have enough time to bloom, even in a shorter

Frequently Asked Questions

Are Dahlias Annuals or Perennials: Final Thoughts

In conclusion, dahlias can be perennials, tender perennials, or annuals depending on the climate zone in which they are grown. By understanding the specific requirements for your region and taking the necessary steps to protect your dahlias, you can enjoy their beautiful blooms year after year. Regardless of whether they are grown as annuals or perennials, dahlias are a stunning addition to any garden and well worth the effort to grow and maintain.

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Overview of the Sweet Nathalie Dahlia

The Sweet Nathalie Dahlia is a medium-sized variety with a blush to cream-white color. It boasts a 5-inch flower size and typically reaches a plant height of approximately 42 inches. This dahlia variety is categorized as a formal decorative type, which means it has a symmetrical bloom with uniform layers of petals. The long, strong stems make it an excellent choice for cut flower arrangements and provide support for the lush blooms.

Specs

Form: Formal decorative
Bloom size: 5 inches
Growing Conditions: Full sun
Days to maturity: 80 to 100 days
Plant spacing: 12 to 18 inches
Pinch: when 12 in tall
Plant height: 36-48 inches tall
Stem length: 12-18 inches

Ideal Growing Conditions for the Sweet Nathalie Dahlia

To ensure the best growth and performance, it is essential to provide the Sweet Nathalie Dahlia with the proper growing conditions. This dahlia variety thrives in full sun and well-draining soil. It is also crucial to maintain a consistent watering schedule, as dahlias are not drought-tolerant plants. The ideal pH level for dahlias is between 6.5 and 7.0, and they benefit from a well-balanced fertilizer with a ratio of 5-10-10.

Planting Sweet Nathalie Dahlia Tubers

When planting your Sweet Nathalie Dahlia tubers, it is essential to choose a location in your garden that receives at least 6 hours of direct sunlight per day for optimal growth. Begin by digging a hole approximately 6 inches deep and wide enough to accommodate the tuber. Place the tuber in the hole with the eye facing upwards, and then cover with soil. Space each tuber about 12-18 inches apart to allow enough room for growth.

It is recommended to plant your dahlia tubers in early spring, once the threat of frost has passed. However, in colder climates, you may need to start your tubers indoors and transplant them outside once the weather has warmed.

Caring for Your Sweet Nathalie Dahlia

Proper care is essential for your Sweet Nathalie Dahlia to thrive and produce beautiful blooms. Here are some care tips to help you maintain healthy plants:

• Watering: Dahlias require consistent moisture throughout the growing season. Water your plants deeply once or twice per week, ensuring the soil remains consistently moist but not saturated.
• Fertilizing: Apply a well-balanced fertilizer with a 5-10-10 ratio once per month during the growing season. Be sure not to over-fertilize, as this can lead to weak stems and fewer blooms.
• Pinching: When your Sweet Nathalie Dahlia reaches about 12 inches in height, pinch off the top growth to encourage branching and more abundant blooms.
• Staking: Due to the height of the Sweet Nathalie Dahlia, it may require staking to provide support for the long, strong stems.

Blooming Time and Harvesting

The Sweet Nathalie Dahlia typically blooms from mid-season, providing a stunning display of color in your garden. When it comes to harvesting your dahlias, it is essential to do so at the right time. Dahlias do not unfurl much once they have been harvested, so it is crucial not to pick them too early. Harvest when the blooms are three-quarters of the way open, but not overly ripe.

When cutting your dahlias for arrangements, choose flowers that have firm and lush petals rather than papery or slightly dehydrated ones. Place them into water with a hydrator or sear the stem ends by placing them into 160°F to 180°F water and allowing them to cool for one hour. With proper care, you can expect a vase life of around 5 days.

Uses of Sweet Nathalie Dahlia in Arrangements and Decorations

The delicate color and elegant form of the Sweet Nathalie Dahlia make it a popular choice for various arrangements and decorations. Its romantic blush tone is perfect for wedding arrangements, while its medium size and sturdy stems make it an ideal choice for bouquets and centerpieces. Additionally, the Sweet Nathalie Dahlia’s charming appearance lends itself well to cake decorations and other home adornments.

Growing Sweet Nathalie Dahlia as a Cut Flower

If you plan to grow Sweet Nathalie Dahlia primarily as a cut flower, there are a few tips and tricks to help you get the most out of your blooms:

• Plant in rows: Planting your dahlias in rows can make it easier to access and harvest your flowers for arrangements.
• Deadheading: Regularly remove spent blooms to promote continued flowering and keep your plants looking tidy.

Pests and Diseases

As with any plant, Sweet Nathalie Dahlia may be susceptible to various pests and diseases. Some common issues include:

• Aphids: These small insects can damage your dahlias by sucking the sap from the plant. Treat with insecticidal soap or neem oil to control infestations.
• Spider mites: These tiny pests can cause damage by feeding on the plant’s leaves. Keep the plant well-watered and use miticides if necessary.
• Powdery mildew: This fungal disease appears as a white, powdery substance on the leaves and can be treated with fungicides or by improving air circulation around the plant.
• Slugs and snails: These pests can cause damage by feeding on the leaves of your dahlias. Use slug traps or natural deterrents, such as crushed eggshells, to keep them at bay.

Storing and Overwintering Sweet Nathalie Dahlia Tubers

In colder climates, it may be necessary to store your Sweet Nathalie Dahlia tubers over the winter to protect them from harsh temperatures. Here are some steps to help you store your tubers successfully:

1. After the first frost, trim your dahlia stems to about 4-6 inches above the ground.
2. Carefully dig up the tubers, making sure not to damage them in the process.
3. Gently remove any remaining soil from the tubers and allow them to dry in a well-ventilated area for a few days.
4. Wrap each tuber in newspaper or store them in peat moss, ensuring they are not touching each other.
5. Place your wrapped tubers in a cool, dark location with a temperature between 40°F and 50°F.
6. Check on your tubers periodically throughout the winter to ensure they are not rotting or drying out. If necessary, mist them with water to maintain proper moisture levels.
7. In early spring, prepare to divide your dahlia tubers.

FAQ

Final Thoughts on Sweet Nathalie Dahlia

In conclusion, the Sweet Nathalie Dahlia is a stunning addition to any garden or floral arrangement. With its delicate blush tones, elegant form, and medium size, it is sure to become a favorite among both professional and amateur gardeners. By following the proper growing conditions and care requirements outlined in this guide, you can enjoy the beauty of the Sweet Nathalie Dahlia in your garden or as part of your favorite arrangements.

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Sprouting Dahlia Tubers

To start, let’s make sure we know a few important things about Dahlias. First, while you can grow dahlias from seed, most growers choose to use tubers. The tuber always creates an exact match of the flower, so you know exactly what you’re getting.

Tubers range from $5-25 depending on the variety, so it’s certainly no small investment. Luckily, you can take cuttings from tubers and drastically increase your number of plants.

That’s what we do and in just two years we’ve gone from a dozen dahlias to hundreds of plants. And to top it all off, cuttings still create tubers so you can exponentially expand your stock.

Even if you’re not taking cuttings, it can help to sprout your dahlia tubers if you have a short growing season like we do. At 8,000 feet, every day counts when you’re trying to grow dahlias in Colorado!

Supplies Needed for Sprouting Dahlias

It doesn’t take a lot sprout dahlia tubers, but it helps to have a few basics.

These include:

• Pots – 2.5-inch pots work great when working with single tubers. For larger clumps you’ll either need to divide the tuber or size up to gallon size pots.
• Potting soil – We’ve used a variety soils and they’ve all worked well, but we’ve especially seen good results with this potting soil from Fox Farms.

Waking Up Dahlias

Okay, now that you have your tubers and your supplies ready, it’s time to wake up your dahlias. Whether you’ve been storing them over winter or just purchased them, the process is the same.

Bring them into a warm room – anywhere from 60-70 degrees is great. Place them out of direct light and let them sit for a few days. The warmer temperatures will signal to the dahlia that it’s time to get growing.

Potting Up Dahlias

Now comes the fun part. Fill your pots with soil and organize your dahlias.

You’ll want to mark the variety so that you can keep track of what is growing.

Stick the dahlia down in the soil, leaving an inch or two above the surface. It’s imperative that the “eye” of the tuber is out of the soil, as this is what sprouts.

The eye of a dahlia looks like a little black or red bump. Imagine a sprouting potato, it’s very similar to that.

Water lightly and leave in a warm place (but avoid bottom heat). Once sprouts appear, you can move the tubers to a bright window or greenhouse.

Stay tuned for part two where I cover everything you need to know about taking Dahlia cuttings.

The post Sprouting Dahlia Tubers: The Complete Guide appeared first on Wild Mountain Homestead.

I love seeing them, but I also don’t want them devouring my garden!

Are Dahlias Deer Resistant?

The short answer: Deer don’t generally eat dahlias. But I wouldn’t go so far as to say that dahlias are deer resistant. And here’s why.

After several years gardening in an area with heavy deer pressure, I will say that dahlias aren’t a first choice. But a hungry deer will munch on just about anything.

We have a large half acre garden. It’s filled with all sorts of veggies including lettuces, kale, beets, radishes, carrots, tomatoes, squash, herbs, and more. We also have a substantial flower garden that is filled with bee balm, snapdragons, sunflowers, zinnias, cosmos, and, of course, dahlias (my current fave is the Sweet Nathalie Dahlia!). We love this star of a flower arrangement and have been increasing our stock sprouting dahlia tubers, taking cuttings, and planting more every spring.

Normally our garden is protected by a tall fence (as you can see in this photo). But at the end of this season, a portion of the fence was knocked down. Pair that with our Colorado Mountain Dogs needing to be corralled (protecting the chickens) away from the garden, plus us being away from the homestead on a camping trip. And, well, the deer had a bit of a feast.

It seemed their top favorite flower is sunflowers, followed by amaranth and zinnia buds. They loved most every vegetable and, not surprisingly, really mowed down the lettuce and kale.

I can’t blame them, it is quite delicious.

It wasn’t until all these flowers and veggies had been eaten, that the deer finally turned towards the dahlias.

So while in my growing experience, dahlias are not a deer’s first choice. Once all the other yumminess has been devoured (or protected!), the deer will start eating dahlias.

But there is hope. Despite a snafu this season which lead to some snacking deer, we have found several ways to keep deer out of the garden.

How to Keep Deer from Eating Flowers

It’s true what they say, “the best defense is a good offense.” People are usually talking about sports when they use this phrase. But it’s also true for keeping deer from eating your dahlias.

A Tall Fence

First off, you’re going to need a good fence. Keep in mind that deer have an impressive ability to jump over and through just about anything.

Most people agree that your fence needs to be between 6 to 10 feet tall. We’ve certainly found that to be the case. I’d recommend at least 8 feet tall and a full 10 feet if you have elk in your area.

You can use a variety of materials for fencing. It mostly depends on your aesthetics and budget. Keep in mind that fencing in a large garden can get expensive. This budget-friendly option isn’t the most beautiful, but it works.

A Livestock Guardian Dog

Perhaps even more effective than a fence, is a trained livestock guardian dog.

On top of protecting our chickens, pigs, and children from predators, our two Colorado Mountain Dogs do an excellent job keeping the deer out of our garden.

They do this by patrolling the area and barking or chasing off any unwanted animals. This works great on our off-grid homestead. We don’t have neighbors nearby and without these dogs our livestock was being regularly attacked by bears and mountain lions.

That said, if you live in a more urban area an LGD might not be the right choice. In that case, just be sure that your fence is adequately tall and strong.

FAQ

Conclusion: You Don’t Have to Let Deer Eat Your Dahlias

To wrap it up, are dahlias completely deer resistant? No.

But that doesn’t mean you can’t grow them successfully. We live on 35 acres in a remote part of Colorado. Deer and elk are abundant. But with the proper fence, and help from our Colorado Mountain Dogs, we are successfully growing a field of dahlias.

If we can do it out here, at high-elevation, I have faith you can, too!

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