Kohlrabi planting calendar
When to plant kohlrabi — pick your state
Kohlrabi timing swings hard by climate — choose your state for sow, transplant, and harvest dates calibrated to its USDA zone and frost window.
Northeast
Southeast
Midwest
Southwest
West
Pacific
Not listed: Hawaii — the dominant climate zone there is outside kohlrabi's practical range, so a generic calendar would mislead more than it helps.
Common questions
When should I plant kohlrabi?
Kohlrabi is a fast-maturing brassica that tolerates light frost down to about -4 °C but turns woody and pithy when daytime temperatures exceed 27 °C; transplant or direct-sow 3–4 weeks before the last spring frost for a summer harvest, or time a second sowing so plants mature in the cool days of early autumn. Harvest promptly when the swollen stem reaches 5–7 cm (2–3 inches) in diameter — larger bulbs become fibrous. Succession-sow every 3 weeks to extend the harvest window. Because the right window depends on your local frost dates, pick your US state above for a calendar with exact sow, transplant, and harvest dates.
Does the best time to plant kohlrabi vary by state?
Yes — planting dates swing by several weeks across the US because each state sits in a different USDA zone with its own frost window. Every state page here gives kohlrabi dates calibrated to that state's climate.
How are these kohlrabi planting dates calculated?
Each state's dates come from that state's dominant USDA hardiness zone and NOAA average frost dates, then adjusted for kohlrabi's cold tolerance and days to maturity.