GardenWizzPlant Care Card

Cosmos

Cosmos bipinnatus · Annual

Hardiness
H3 Half-hardy (to 1 to −5°C)
Position
Full sun
Height × Spread
0.6–2.8 m × 10–50 cm
Soil
moderately fertile, moist, but well-drained soil; pH between 6.0 and 8.5
Flowering
June–November
Toxicity
No specific toxicity is listed by the RHS. This is not a guarantee of safety — check with a vet or the ASPCA before pets or children eat any plant.

The Gardening Year

J
F
M
A
M
J
J
A
S
O
N
D
🌱 Sow
🪴 Plant out
🌸 In flower

Watch out for

excessive rain:

cold temperatures:

snails and slugs:

aphids:

Full guide: gardenwizz.com/plants/garden-cosmos © GardenWizz — UK gardening encyclopedia