When to Plant Radishes in Zone 3
In USDA zone 3a, plant outdoors May 16 to July 15, and expect your first harvest around July 15. Zone 3 also has a fall planting window opening around July 16. (3a shown here — see 3a and 3b dates separately below.)
Radishes planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
spring planting
Direct sow
May 16
Projected first harvest
Jul 15
fall planting
Direct sow
Jul 16
Projected first harvest
Sep 14
spring planting
fall planting
Most radishes mature in about 24 to 60 days depending on the variety, needing roughly 103 frost-free days in zone 3a.
Radishes planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
spring planting
Direct sow
May 6
Projected first harvest
Jul 5
fall planting
Direct sow
Jul 21
Projected first harvest
Sep 19
spring planting
fall planting
Most radishes mature in about 24 to 60 days depending on the variety, 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
6 varieties of radishes in the HomeSown library. Tap any for its full grow guide.
Common problems with radishes
What to watch for, with identification and treatment for each
🌱 Grow radishes with a calendar built for your exact yard
HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.
Start your free garden →