Dahlia Cactus Mixed – pink, white and yellow blooms in a clear vase by a sunny window

Dahlia Cactus Mixed

£2.30
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Dahlia Cactus Mixed – pink, white and yellow blooms in a clear vase by a sunny window

Dahlia Cactus Mixed

Dahlia variabilis Cactus Group — quilled double flowers; mixed colours

Large fully double blooms with quilled petals creating a starburst effect in hot pinks, yellows, oranges and reds — the rain-resistant architectural cactus dahlia.

£2.30

Free UK delivery on seed orders over £40

Dispatched from our Norfolk farm by Royal Mail, usually within one working day.

Your growing year

Sow, plant out and flowering months for this variety

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sow
Plant out
In flower
SowPlant outIn flower

At a glance

Height
Up to 120cm
Spread
50cm
Spacing
50cm
Position
Full sun
Colour
Mixed
Seeds per packet
40
Soil
Rich, well-draining, fertile soil with a slightly acidic to neutral pH
Grow guide How to grow Dahlia Cactus Mixed Read the full guide →

About this variety

Every petal rolled into a tight quill, so the flower opens as a spiky starburst rather than a disc. The mix runs hot pink, yellow, orange and ruby red on substantial plants to 120cm, with stems long enough to cut.

The quilling has a practical benefit nobody mentions on the packet. Water runs straight off a rolled petal instead of pooling in the middle of the flower, so cactus dahlias come through a wet British August far better than the heavy decorative and dinnerplate sorts, which sit full of rainwater and rot in the head. In a wet summer that is the difference between a crop and a mess.

It is a half-hardy perennial grown from seed as an annual, flowering July to the first frosts, and the tubers can be lifted and stored over winter if you want bigger plants next year. At 120cm with heavy heads it needs staking, and it needs it in June rather than after the first gale. Slugs find the young plants before anything else does, so protect them when they first go out.

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