Permaplans
Deutsch
All plants

Kohlrabi

Brassica oleracea gongylodes
Edible value8Medicinal value2Other uses1
biennial0.5×0.3 mzone 5–8light shade🍎 Edible

Will it grow where I live?

Kohlrabi is hardy to zone 5 – that covers all of Central Europe and the British Isles, and every USDA zone from 5 upwards.

Or check it for your location right here:

Winter hardiness by USDA zone, summer warmth by heat sum – the same values the app and the plant finder use.

Profile

Family
Brassicaceae
Habit
biennial
Height
0.5 m
Spread
0.3 m
Growth
very fast
Lifespan
2 years
First yield
after 1 year
Hardiness
zone 5–8
Shade tolerance
light shade
Soil
Sand, Silt, Loam, Clay
Soil moisture
semi-dry – moist
pH
5.3 – 8.6
pollen source

Flowering & harvest

J F M A M J J A S O N D
Flowering
Leaf harvest

Times apply to the northern hemisphere in a temperate climate and shift with altitude and cultivar.

Uses

Edible8 of 10
Medicinal2 of 10
Other uses1 of 10

Growing

Kohlrabi grows best in full sun in fertile, well-drained soil with a pH of 6.0 to 7.5. Sow seeds about 0.5 cm deep in early spring or late summer for fall harvest. Keep soil consistently moist and fertilize before planting and midseason. Thin seedlings to 15 cm apart. It tolerates cool temperatures and can be grown in succession for continuous harvest.

Frequently asked questions

Kohlrabi: how big does it get?

Kohlrabi (Brassica oleracea gongylodes) grows as a biennial and reaches roughly 0.5 m in height when mature, with a spread of about 0.3 m. Growth is very fast.

Kohlrabi: what site does it need?

Kohlrabi tolerates light shade. Suitable soils are Sand, Silt, Loam, Clay. Soil moisture should be in the range semi-dry – moist. The pH may lie between 5.3 and 8.6.

Kohlrabi: is it hardy?

Kohlrabi is listed as hardy in zone 5–8 and survives normal winters outdoors there.

Kohlrabi: will it grow in Central Europe?

Kohlrabi is hardy to zone 5 – that covers all of Central Europe and the British Isles, and every USDA zone from 5 upwards.

Kohlrabi: when does it flower?

In a temperate northern-hemisphere climate it flowers from May to July.

Kohlrabi: is it poisonous?

No toxicity is recorded for Kohlrabi. With wild plants, never rely on a database alone — only on a confident identification.

Kohlrabi: what is it used for?

Rated on a scale up to 10: Edible 8/10, Medicinal 2/10, Other uses 1/10.

Community experience

No first-hand reports for this plant yet.

Growing it? Write in the app what works for you – your post will show up here.

💬 Get the app and join in

Plan this plant into your own garden

Permaplans plans your garden to scale on the map — with a site check, harvest calendar and over 1,000 plants. Free for iPhone, Android, Mac, Windows & Linux.

Will this plant grow where you live? → Check your site

All data without warranty. Site data and texts from the Permaplans database.

Start your garden

Try it for free — right in your browser, no sign-up.

Open in the browserGet the app