When to Plant Radishes in Zone 4
In USDA zone 4, plant outdoors May 1 to June 30, and expect your first harvest around June 30. Zone 4 also has a fall planting window opening around July 26.
Radishes planting calendar for USDA Zone 4
spring planting
Direct sow
May 1
Projected first harvest
Jun 30
fall planting
Direct sow
Jul 26
Projected first harvest
Sep 24
spring planting
fall planting
Most radishes mature in about 24 to 60 days depending on the variety. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for radishes
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and radishes need about 24 to 60 days depending on the variety to mature.
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 →