Dahlia 'Purple Gem'


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Key information

Plant type

Tender perennial

Flower colour






Skill level


photo by Dianna Jazwinski, copyright GAP Photos (54920)

Plant details

Dahlias originate from Mexico and Guatemala where they produce single flowers. Enthusiasts in Europe in the 18th century bred many different forms, which now produce blooms that range from 5cm to 30cm (2in to 12in) in diameter. The rich purple, cactus flowerheads of 'Purple Gem' make a bold statement in the garden. It is an excellent variety for the back of the border or in cut-flower displays. Lift the tubers after the first frosts and bring indoors to overwinter in a frost-free place.

Family: Asteraceae

Genus: Dahlia

Cultivar: Purple Gem

Plant type: Tender perennial

Flower colour: Purple

Foliage colour: Mid-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Clay/heavy, Acidic, Chalky/alkaline, Moist, Sandy

Hardiness: Tender

Skill level: Experienced

Height: 125cm

Spread: 40cm

Time to divide plants: March to April

Time to take cuttings: March to April

Flowering period: July to September

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