DibbleWhen to plant kohlrabi in Zone 3
In Zone 3, the last spring frost usually passes around May 15 and the first fall frost arrives around September 15, leaving about 123 frost-free days. The windows below are computed from those frost dates, with the same math the Dibble app uses.
Short, cool season. Start most warm crops indoors and protect from late frosts.
Planting windows for kohlrabi in Zone 3
| Task | Window |
|---|---|
| Direct sow | May 1 to May 15 |
| Estimated harvest | Jun 25 to Jul 9 |
The harvest estimate counts 55 days to maturity, then a picking window of about 14 days. These windows use typical frost dates for Zone 3; Dibble pins them to your exact ZIP code.
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How to grow kohlrabi
Sow 4 weeks before last frost and again for fall. Harvest the swollen stem young, about tennis-ball size, for the sweetest crunch.
Companion plants
Good neighbors for Kohlrabi:
Better kept apart:
Kohlrabi in nearby zones
Keep exploring
Kohlrabi: the full growing guide · The Zone 3 planting calendar · Every crop and zone
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Dates are estimates based on typical frost dates for the zone. Your yard has its own microclimate, so use them as a starting point and adjust as you learn your space.