When to Plant Kohlrabi in Zone 3
In USDA zone 3a, start seeds indoors around April 11, transplant or plant outdoors May 16 to July 10, and expect your first harvest around July 10. Zone 3 also has a fall planting window opening around July 2. (3a shown here — see 3a and 3b dates separately below.)
Kohlrabi planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
spring planting
Start seeds indoors
Apr 11
Transplant outdoors
May 16
Projected first harvest
Jul 10
fall planting
Direct sow
Jul 2
Projected first harvest
Aug 26
spring planting
fall planting
Kohlrabi is ready to harvest in about 55 days, needing roughly 103 frost-free days in zone 3a.
Kohlrabi planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
spring planting
Start seeds indoors
Apr 1
Transplant outdoors
May 6
Projected first harvest
Jun 30
fall planting
Direct sow
Jul 7
Projected first harvest
Aug 31
spring planting
fall planting
Kohlrabi is ready to harvest in about 55 days, needing roughly 118 frost-free days in zone 3b.
Not sure whether you're in 3a or 3b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of kohlrabi in the HomeSown library. Tap any for its full grow guide.
Common problems with kohlrabi
What to watch for, with identification and treatment for each
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