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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

Variety Flowering months Height Planting depth Planting distance
Dahlia Cafe au Lait july to october 80 cm 10 cm 50 cm
Dahlia Loe july to october 80 cm 10 cm 50 cm
Dahlia Procyon july to october 80 cm 10 cm 50 cm
Dahlia Red Dark Wave july to october 45 cm 10 cm 50 cm
Dahlia Kidds Climax july to october 80 cm 10 cm 50 cm
Dahlia Purple Explosion july to october 80 cm 10 cm 50 cm
Dahlia Yelno Harmony july to october 80 cm 10 cm 50 cm
Dahlia Orion july to october 80 cm 10 cm 50 cm
Dahlia Striped Duet july to october 80 cm 10 cm 50 cm
Dahlia Mambo july to october 80 cm 10 cm 50 cm
Dahlia Wandas Aurora july to october 80 cm 10 cm 50 cm
Dahlia Santander july to october 80 cm 10 cm 50 cm
Dahlia Destinys Teachers july to october 80 cm 10 cm 50 cm
Dahlia Grand Prix july to october 80 cm 10 cm 50 cm
Dahlia Downham Royal july to october 100 cm 10 cm 50 cm
Dahlia White Perfection july to october 80 cm 10 cm 50 cm
Dahlia Tyrell july to october 100 cm 10 cm 50 cm
Dahlia Princesse Elisabeth july to october 80 cm 10 cm 50 cm
Dahlia Speech july to october 45 cm 10 cm 50 cm
Dahlia Myama Fubuki july to october 80 cm 10 cm 50 cm
Dahlia Friquolet july to october 90 cm 10 cm 50 cm
Dahlia Belfloor july to october 90 cm 15 cm 50 cm
Dahlia Statue Of Orange july to october 80 cm 10 cm 50 cm
Dahlia Happy Hour july to october 100 cm 10 cm 50 cm