Kohlrabi is a host plant for the white cabbage butterfly and cabbage loopers. If these are common in your area, they can be controlled by hand-picking and applications of the organic bio-control Bacillus thuringiensis. Other non-organic options are also available.
Fall-sown kohlrabi that overwinters will produce seed in the spring. Kohlrabi is self-incompatible and subject to genetic depression. Seed saving requires large numbers of plants, generally 30 or more. Kohlrabi will cross with other members of Brassica oleracea, such as kale, cabbage, broccoli, garden cress, and so on.
These estimates for how long Kohl rabi takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average 7 days | Min 2 days | Max 21 days (145)
Average 18 days | Min 6 days | Max 43 days (13)
Average 84 days | Min 24 days | Max 178 days (108)
Our when to plant Kohl rabi estimates are relative to your last frost date.
The name comes from the German Kohl (which means “cabbage”) plus RÃbe / Rabi (which means “turnip”)
Kohlrabi was developed in the 1500s in Europe.
Kohlrabi
Brassica oleracea var. gongylodes, Brassica oleracea gongylodes
Misspellings: kolrabi, Kol Rabi, Kohl Rabbi, Kholrabi, Brasica eraceaol