Table of Contents
- Introduction
- Why Buying Dahlias Online is the Best Choice
- Understanding What You Are Buying: Tubers vs. Bulbs
- How to Evaluate an Online Dahlia Supplier
- Popular Dahlia Varieties to Look for Online
- Choosing the Right Dahlias for Your Garden Space
- Timing Your Online Dahlia Purchase
- What to Do When Your Order Arrives
- Planting for Success: The Basics
- Realistic Expectations for Your First Season
- Caring for Your Dahlias Through the Season
- Conclusion
- FAQ
Introduction
There is nothing quite like the thrill of seeing a dinnerplate dahlia unfurl its first massive bloom in midsummer. These spectacular flowers offer a range of colors and shapes that few other plants can match, and our dinnerplate dahlias collection is a great place to start. If you are looking to add this beauty to your yard, knowing where to buy dahlia bulbs online is the first step toward a successful growing season.
At Longfield Gardens, we want to help you feel confident as you select the perfect varieties for your landscape. Finding a reliable source for dahlias is about more than just picking a pretty color; it is about ensuring you receive healthy, high-quality tubers that are ready to thrive. For a broader overview before you shop, our All About Dahlias guide is a helpful starting point.
Whether you are a seasoned gardener or just starting your first flower bed, buying dahlias online opens up a world of possibilities. You can browse hundreds of unique forms and sizes that are rarely available at local big-box stores. By the end of this article, you will know how to navigate online catalogs and select tubers that will provide a season full of magnificent blooms.
Why Buying Dahlias Online is the Best Choice
When you begin searching for dahlias, you might notice that local garden centers carry a limited selection. Most physical stores only have space for a few standard varieties, often sold in generic packaging. Shopping online changes the experience entirely by giving you access to a vast library of plant genetics.
When you shop with us or other reputable online suppliers, you can filter your search by flower size, plant height, and bloom style. This precision allows you to plan your garden with much more detail. You can find exactly the right shade of peach to match your patio furniture or the perfect sturdy-stemmed variety for your kitchen table arrangements.
Online retailers also specialize in the proper handling of dormant tubers. Because we work directly with expert growers, the tubers are stored in climate-controlled environments until it is time to ship them to your door. This careful process ensures the plants stay healthy and dormant, preventing them from drying out or sprouting prematurely on a retail shelf.
Understanding What You Are Buying: Tubers vs. Bulbs
In the gardening world, you will often see dahlias referred to as "bulbs." Technically, dahlias grow from dahlia tubers. While the terminology doesn't change how you plant them, understanding what a healthy tuber looks like will help you shop with confidence.
A dahlia tuber looks somewhat like a small sweet potato or a bunch of brown carrots. Each tuber must have an "eye" to grow. The eye is a small bump located on the neck of the tuber where it connects to the old stem. This is the point where the new sprout will emerge in the spring.
When you buy from a high-quality online source, you should expect tubers that are firm to the touch, not shriveled or mushy. They should arrive with clear labels so you know exactly which variety is which. High-quality suppliers also ensure the tubers are large enough to have plenty of stored energy, which gives the plant a strong start once it hits the warm soil.
How to Evaluate an Online Dahlia Supplier
With so many websites offering flower bulbs, it can be hard to know which ones to trust. A good online supplier should provide more than just a checkout button; they should offer transparency and support throughout the growing process.
Look for Detailed Descriptions
A trustworthy website will provide specific details for every variety. You should be able to see the expected height of the plant, the diameter of the flower, and the bloom style. If a site only offers a photo without any growth habit information, it is difficult to know if that plant will fit in your space.
Check the Shipping Policies
Dahlias are "tender," meaning they cannot survive freezing temperatures. A professional supplier will not ship your tubers in the middle of a blizzard. Instead, they will coordinate shipping dates based on your USDA plant hardiness zone, and they should publish clear Shipping Information.
Quality Guarantees
Always look for a company that stands behind its products. At Longfield Gardens, we offer a 100% quality guarantee to ensure our customers receive tubers that are true to name and in prime condition. If a supplier doesn't mention a guarantee or a way to contact customer service, it may be a sign to look elsewhere.
What to do next:
- Check your USDA hardiness zone so you know your estimated shipping window.
- Look for "About Us" or "Contact" pages on a supplier’s website to verify their physical location.
- Read through the company’s guarantee policy before placing your order.
Popular Dahlia Varieties to Look for Online
One of the best parts of buying online is the ability to hunt for specific flower forms. Dahlias are categorized by the shape and size of their petals. Here are some of the most popular types you will find in our collection.
Dinnerplate Dahlias
These are the giants of the dahlia world. Their blooms can reach 8 to 10 inches in diameter, sometimes even larger. Because they are so heavy, they often require staking, but the visual impact is worth the extra effort.
- Cafe au Lait: Perhaps the most famous dahlia, featuring creamy petals with hints of peach and blush.
- Kelvin Floodlight: A classic variety known for its massive, sunny yellow blooms.
Decorative Dahlias
This is the most common category, featuring broad, flat-tipped petals that are often slightly blunt at the ends. They come in a wide range of sizes and are excellent for filling out a garden border. If you want to browse the full range, start with our decorative dahlias.
- Thomas Edison: A deep, royal purple dahlia that has been a garden favorite for decades.
- Labyrinth: Known for its unique color blend of apricot, pink, and raspberry.
Ball and Pompon Dahlias
If you love symmetry, ball dahlias are for you. They produce perfectly round, globe-shaped flowers with petals that roll inward. They are exceptionally hardy in vases and provide a formal, tidy look to the garden.
- Jowey Winnie: A beautiful soft pink ball dahlia that is very productive.
- Cornel: A rich, velvet-red variety that stands out in any bouquet.
Cactus and Semi-Cactus Dahlias
These varieties have long, pointed petals that curve outward or roll backward, giving them a spiky, starburst appearance. For a narrower look at these forms, explore our semi-cactus dahlias. They add a wonderful texture to the garden and are often more resistant to heavy rain because the water slips right off the narrow petals.
Choosing the Right Dahlias for Your Garden Space
Before you click "add to cart," take a moment to consider where you will be planting your dahlias. Matching the plant's growth habit to your garden's layout is one of the easiest ways to ensure success.
If you are planting in a small space or using containers, look for "border dahlias" or dwarf varieties. These typically stay under two feet tall and do not require heavy staking. They are perfect for the front of a flower bed or for adding color to a sunny patio.
For the middle or back of a garden bed, look for varieties that grow 3 to 5 feet tall. These taller plants create a beautiful backdrop for shorter annuals and perennials. Keep in mind that any dahlia over three feet tall will likely need some support, such as a sturdy stake or a tomato cage, to keep it from leaning during summer storms.
Timing Your Online Dahlia Purchase
The best time to buy dahlia bulbs online is actually during the winter months. While you won't be planting them until the spring, many popular varieties sell out quickly. Most online catalogs open for pre-orders in late autumn or early winter.
By ordering early, you reserve your favorite colors and shapes while they are still in stock. The supplier will then hold your order in a climate-controlled warehouse until the spring. This is a great way to beat the "spring rush" and ensure you get the exact varieties you want for your garden design.
We monitor weather patterns across the country to determine the safest time to ship. Generally, we start shipping to the warmest southern zones in March and move northward as the ground thaws. By the time your box arrives, the soil in your area should be warming up and the danger of hard frost should be passing.
What to Do When Your Order Arrives
The moment your package arrives is exciting, but it is also the most important time to provide a little care. Open the box immediately to let the air circulate around the tubers.
Inspect each tuber to ensure it is firm. It is normal for tubers to have a little bit of surface dust or loose peat moss from the shipping process. If you aren't ready to plant right away because the ground is still cold, keep them in a cool, dark, and dry place. A basement or an unheated closet is usually perfect. Avoid places that are too warm, as this might encourage them to grow before you can get them into the soil.
If you live in a region with a short growing season, you can "pre-start" your dahlias indoors about four weeks before the last frost. Simply place the tubers in pots with a little potting soil and keep them in a bright, warm spot. By the time it is safe to move them outside, you will already have a healthy green sprout.
Planting for Success: The Basics
Once you have purchased your dahlias from Longfield Gardens and the soil has warmed to about 60°F, it is time to plant. If you want a step-by-step walkthrough, see our How to Plant Dahlias.
- Sunlight is Key: Dahlias are sun-worshipers. They need at least 6 to 8 hours of direct sunlight every day to produce those big, beautiful blooms.
- Good Drainage: While dahlias like water, they hate having "wet feet." Make sure your soil is loose and allows water to drain away easily. If your soil is heavy clay, consider planting in raised beds.
- Correct Depth: Plant the tuber about 4 to 6 inches deep with the "eye" or the old stem pointing upward. Covering the top of the tuber with about 2 inches of soil is a great starting point.
- Wait to Water: This is a common mistake for beginners. Do not water your dahlias heavily until you see the first green sprouts poking through the soil. The tuber has enough moisture to get started, and too much water early on can cause it to rot.
Quick Success Tips:
- Plant your dahlias around the same time you would plant your tomatoes.
- Space large varieties about 2 feet apart to allow for good airflow.
- Add a sturdy stake at the time of planting so you don't damage the roots later.
Realistic Expectations for Your First Season
Gardening is a partnership with nature, and dahlias are generally very rewarding partners. Most tubers planted in late spring will begin blooming by mid-to-late July and continue until the first frost of autumn.
The number of flowers you get depends on the variety and the weather. Smaller-flowered varieties, like pompons and balls, tend to produce more blooms per plant than the giant dinnerplates. If you have a particularly cool or cloudy summer, your plants might take a few extra weeks to get started. Don't worry if they seem a bit slow at first; dahlias love the heat of August and will often put on their best show when other flowers are starting to fade.
It is also important to remember that dahlias are not "plant and forget" flowers. They benefit from regular deadheading, which is the practice of cutting off faded blooms. This tells the plant to stop making seeds and start making more flowers. The more you cut dahlias for bouquets, the more flowers the plant will produce.
Caring for Your Dahlias Through the Season
After you have successfully purchased and planted your tubers, a little routine maintenance will keep them looking their best. For pinching and support, see our How to Pinch and Stake Dahlias.
As the weather gets hot and dry in midsummer, your dahlias will appreciate a deep watering once or twice a week. Instead of a light sprinkle every day, aim for a thorough soaking that reaches the roots. Adding a layer of mulch around the base of the plant can help hold moisture in the soil and keep the roots cool.
If you live in a cold climate (Zone 7 or colder), your dahlias will not survive the winter in the ground. After the first frost turns the foliage black, you can dig up the tubers, dry them off, and store them in a cool, frost-free place until next spring. For the full process, see How to Lift and Store Dahlia Bulbs.
Conclusion
Finding where to buy dahlia bulbs online is the beginning of a colorful journey that will transform your summer garden. By choosing a reputable source like Longfield Gardens, you ensure that you are starting with the highest quality tubers and the expert support you need to succeed. From the giant, pillowy blooms of dinnerplates to the tidy geometry of ball varieties, there is a dahlia for every style and space.
- Select a supplier that offers detailed variety information and shipping timed to your zone.
- Order early in the winter to secure the most popular varieties.
- Choose a sunny, well-draining spot for planting once the soil is warm.
- Enjoy a continuous harvest of fresh flowers from midsummer until the first frost.
For even more practical advice, check out our 8 Tips for Growing Better Dahlias.
Buying dahlias online gives you the freedom to design a garden that is uniquely yours. With a little sunshine and the right start, these tubers will reward you with a spectacular display of color that gets better every year.
Visit our shop today to browse our current selection and start planning your most beautiful garden yet.
FAQ
When is the best time to buy dahlia tubers online?
The best time to buy is during the winter months, typically between December and February. While the tubers won't ship until spring, pre-ordering ensures that you get your favorite varieties before they sell out. Reputable suppliers will hold your order and ship it when the weather is safe for planting in your specific USDA zone.
What should I look for to know if a dahlia tuber is healthy?
A healthy tuber should be firm to the touch, similar to a fresh potato, and free from soft, mushy spots or heavy mold. It should have a clear "neck" and an "eye" near the stem end, as this is where the new growth will emerge. Do not worry if the tuber looks a bit dusty or has small surface wrinkles, as long as it is not completely shriveled and dry.
Is it safe to buy dahlias online if I live in a cold climate?
Yes, it is very safe as long as you buy from a professional supplier who understands shipping logistics. Quality online retailers monitor temperatures and will not ship tender tubers until the risk of hard freezing during transit has passed. Once they arrive, you can keep them in a cool, dry place indoors until your local soil is warm enough for planting.
Why are dahlias often called bulbs when they are tubers?
The term "bulb" is often used as a general category for any plant that grows from a fleshy underground storage organ, including true bulbs, corms, and tubers. While dahlias are technically tubers, most gardeners and retailers use the word "bulb" because it is a familiar term. Regardless of the name, the planting and care requirements remain the same.