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Cut flowers7 varieties

Cosmos

Cosmos bipinnatus

Easy, branching annual with feathery foliage and prolific daisy-like flowers for cutting and pollinators.

Annual (tender)Full sun/Part shadeDrought tolerantheat tolerant
No photograph yetCosmos

Days to maturity

75–90 days

Days to germ.

7–21 days

Spacing

4–12 in

Height

36–60 in

Sun

Sun

Vase life

5–7 days

How we grow it

Germination

Days to germ.
7–21 d
Soil temp
68–75 °F
Depth
0.125 in
Light for germ
light

Culture

Days to maturity
75–90 d
Spacing
4–12 in
Height
36–60 in
Sun
Sun
Frost
Tender; foliage will die back with first autumn frost · tender

Harvest

Cut stage
Petals just opening, but not yet flattened.
Vase life
5–7 d
Notes
Deadheading is required to have blooms all summer.

Varieties

7 varieties on record