GardenWizzPlant Care Card

Sunflower

Helianthus annuus · Annual

Hardiness
H4 Hardy — average winter (to −5 to −10°C)
Position
Full sun
Height × Spread
3–10.9 m × 50–100 cm
Soil
well drained
Flowering
June–August
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

Fusarium: —

Downy mildew: —

Broomrapes: —

Full guide: gardenwizz.com/plants/sunflower © GardenWizz — UK gardening encyclopedia