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VegetablesHardyBiennial
Kohlrabi
Kohlrabi is a quick brassica grown for its swollen stem, which stays sweet, crisp and mild when harvested young. It is an excellent space-efficient crop for succession sowing, with good raw and cooked uses from summer into autumn.
Basic information
Category
Vegetables
Lifecycle
Biennial
Hardiness
Hardy
Planting partners
2 companions · 1 crop to avoid
Growth profile
Days to harvest
60 days
Germination window
7–14 days
Germination temperature
10–20 °C
Plant spacing
15 cm
Row spacing
30 cm
Sowing depth
1.5 cm
Height
45 cm
Spread
15 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
Aim for uninterrupted growth so the swollen stems stay tender and never become fibrous or woody. Sow little and often, protect young plants from flea beetle where needed, and harvest before the stems become oversized.
Common pests
Cabbage root fly, flea beetles, caterpillars, slugs.
