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Dahlia Tubers

Dahlia Tubers

Flowers until the first night frost.

A blue dahlia does not exist. Growers have been trying for two centuries, but the plant simply does not make the pigment, so everything from white to nearly black is possible and blue is not. They flower from July until it turns properly cold, and the more you cut, the more come.

401 varietiesflowers July to Octoberfrom €1,80

Flowering month
401 products

Hand-picked for quality and size.

If you want early flowering, start the tubers indoors in a pot from February or March and put them outside in mid-May. Plant the tuber 10 to 15 cm deep. Low kinds go about 30 cm apart, tall ones 50 to 60 cm. Full sun matters: at least six hours a day.

Keep cutting off spent flowers and the plant makes new ones. Give tall kinds a stake, and pinch out the top once when the plant is about 30 cm. That makes it fuller.

After the first night frost the leaves turn black. Then lift the tubers out of the ground, cut the stem back to about 10 cm, let them dry and store them cool and frost-free in a box with peat or sand.

Practical: Dahlias are not hardy here. Do not plant the tubers until mid-May, once the soil is above 10 degrees, and lift them after the first night frost. They range from 30 cm in a pot to a metre and a half at the back of the border. If you want to help bees with them, choose the kinds with an open heart.

At a glance: Dahlia Tubers

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Variety Flowering months Height Planting depth Planting distance
Dahlia Jowey Winnie july to october 100 cm 10 cm 50 cm
Dahlia Yellow Perception july to october 80 cm 10 cm 50 cm
Dahlia Eveline july to october 100 cm 10 cm 50 cm
Dahlia Caribbean Fantasy july to october 80 cm 10 cm 50 cm
Dahlia Praime july to october 80 cm 10 cm 50 cm
Dahlia Yellow Jill july to october 110 cm 10 cm 50 cm
Dahlia Red Silence july to october 100 cm 10 cm 50 cm
Dahlia Dutch Delight july to october 80 cm 10 cm 50 cm
Dahlia Sweet Suzanne july to october 110 cm 10 cm 50 cm
Dahlia Princess Erika july to october 80 cm 10 cm 50 cm
Dahlia Foxy july to october 80 cm 10 cm 50 cm
Dahlia Mount Tacoma july to october 90 cm 10 cm 50 cm
Dahlia Dahlegria White july to october 80 cm 10 cm 50 cm
Dahlia Dazzling Magic july to october 80 cm 10 cm 50 cm
Dahlia Kordessa july to october 80 cm 10 cm 50 cm
Dahlia Belle of Barmera july to october 80 cm 10 cm 50 cm
Dahlia Natalie G july to october 110 cm 10 cm 50 cm
Dahlia Purple Taiheijo july to october 90 cm 10 cm 50 cm
Dahlia Temple Of Beauty july to october 80 cm 10 cm 50 cm
Dahlia Tiramisu july to october 80 cm 10 cm 50 cm
Dahlia Beauty Queen july to october 80 cm 10 cm 50 cm
Dahlia Little Tiger july to october 50 cm 10 cm 50 cm
Dahlia Edge of Joy july to october 80 cm 10 cm 50 cm
Dahlia Myrtl Folly july to october 90 cm 10 cm 50 cm