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C
FlowersHardyAnnual
Cornflower
Cornflower is a hardy annual wildflower and cutting flower grown for vivid blue blooms and easy performance from seed. It is particularly useful in cottage gardens, pollinator-friendly planting and annual mixes where a light natural look is wanted.
Basic information
Category
Flowers
Lifecycle
Annual
Hardiness
Hardy
Planting partners
0 companions · 0 crops to avoid
Growth profile
Germination window
7–14 days
Germination temperature
15–20 °C
Plant spacing
30 cm
Row spacing
30 cm
Sowing depth
1 cm
Height
75 cm
Spread
30 cm
Calendar
JJan
FFeb
MMar
AApr
MMay
JJun
JJul
AAug
SSep
OOct
NNov
DDec
Sow Indoors
Sow Outdoors
Plant Out
Flowering / Harvest
Timings based on average frost dates in the UK. Sign up to set your frost dates.
Care tips
Direct sow cornflowers where they are to flower, because they establish quickly and dislike heavy transplanting. Grow them in full sun, avoid overfeeding, and deadhead or cut regularly if you want a longer succession of flowers.
Common pests
Aphids, powdery mildew, slugs on seedlings.
Companions
No companion crops have been added yet.
Don’t grow with
No crops to avoid have been added yet.