What types of dahlias are there?

Dahlias come in countless colors and varieties. Did you know, for example, that there are over 57,000 registered dahlias worldwide? At Bulbs4You, you'll find 250 of them, from which we select the most beautiful and strongest varieties every year. Directly from the Bollenstreek (Dutch Flower Bulb Region). In this blog, you can read about the different dahlia varieties available.

 

How are dahlias classified?

Dahlias are classified in several ways, which can sometimes make choosing a bit overwhelming. However, it's actually very logical once you understand how the system works.

The main classification is by flower shape. Internationally, dahlias are divided into official classes for this purpose, established by the National Dahlia Society (NDS). Additionally, you can also classify dahlias by height and color, for those who want to create a specific color palette with depth in their garden.

 

The dahlia officially has 14 types

Worldwide, there are over 57,000 registered cultivars. At Bulbs4You, you'll find 250 of these dahlias, carefully selected by us. This enormous variation has arisen from centuries of cross-breeding and selection, leading to flowers in every imaginable shape, size, and color. Naturally beautiful!

But to bring some structure to this, the National Dahlia Society has officially classified dahlias into 14 flower forms, also known as classes. Each class has its own characteristics: from the cactus dahlia to the pompon.

 

Which dahlia variety suits your garden?

To be honest, choosing from 250 beautiful varieties with all kinds of colors is not an easy task. Still, there are a few simple questions that will help you a long way:

• How big is your outdoor space? Do you have room in a spacious border or are you dealing with ornamental grasses? Then you can go in any direction. Do you have pots on a patio or balcony? Then you'll want a compact, low-growing variety.
• What do you want to do with them? Dahlias as cut flowers for a vase require long, straight stems. Do you want to make the garden shine? Then single dahlias or waterlily-types are often most attractive to bees and butterflies.
• What atmosphere do you want to create? Do you want to be overwhelmed by color? Or would you prefer to keep it calm and atmospheric? That question determines what your garden or border will look like. 

 

Dahlia varieties by color, what color groups are there?

Pink, orange, red, white. With dahlias, you can go in many directions regarding color. To create distinction, they are often divided into color groups. It also helps you compose a border that truly works.

 

When and how do you plant dahlia tubers?

You plant dahlia tubers outdoors once the night frost has passed. In the Netherlands, this is usually from mid-May. We recently wrote a blog with extensive tips on planting dahlias.

When do they bloom? Expect the first flowers about 8 to 10 weeks after planting. Those who plant in May will see the first color in July, and from August onwards, things really pick up. Dahlias usually continue to bloom until the first night frost!

 

Order the most beautiful dahlias from the Bollenstreek

Curious which dahlia suits your garden? View our full assortment of 267 dahlia varieties. There are undoubtedly beautiful types among them! You can easily order online and we will ensure that the fresh tubers from the Bollenstreek arrive at your doorstep within 4 working days, with free shipping for orders over €70.

 

Frequently asked questions about dahlia varieties

 

Which dahlia variety is easiest for beginners?

Single dahlias and decorative dahlias are generally the easiest for beginners. They grow well, bloom profusely, and require little extra care. A good spot in the sun and regular water. You don't really need more than that to get started.

Can you combine different dahlia varieties in one border?

Combining different dahlia varieties in a border is definitely possible! This often yields the most beautiful results. For example, combine a tall decorative dahlia as an eye-catcher with low pompon dahlias in front.

When do dahlias start to bloom?

Expect the first flowers about 8 to 10 weeks after planting. Those who plant in May will see the first color appear in July. From August, most dahlias really get going.

Do dahlia tubers need to be dug up every year?

In the Netherlands, you need to dig up the tubers every year. Dahlias are not winter hardy and will not survive frost in the ground. Dig up the tubers after the first night frost, let them dry, and store them frost-free in a dry, dark place. In the spring, you can plant them again!

Are dahlias poisonous to humans or pets?

Dahlias are mildly toxic to dogs and cats. Ingestion can lead to stomach upset. They are not dangerous to humans, but some people are sensitive to the sap upon skin contact. Keep this in mind if you have pets that like to sniff around in the garden.