Radishes planting calendar
When to plant radishes — pick your state
Radishes 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 radishes's practical range, so a generic calendar would mislead more than it helps.
Common questions
When should I plant radishes?
Radishes are the fastest root crop — spring types mature in 22-30 days from direct sowing, making them ideal row-markers alongside slower crops. Sow 2-4 weeks before the last spring frost as soon as soil can be worked; they bolt and become pithy and peppery hot if left too long in warming soil. Succession-sow every 7-10 days for a continuous harvest; daikon and winter types sown in late summer take 50-70 days and tolerate heavier frost. 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 radishes 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 radishes dates calibrated to that state's climate.
How are these radishes planting dates calculated?
Each state's dates come from that state's dominant USDA hardiness zone and NOAA average frost dates, then adjusted for radishes's cold tolerance and days to maturity.