4a When to plant radishes in zone 4a
Zone 4a median last spring freeze: May 15 · first fall freeze: Sep 24 · harvest in ~25-40 days.
| Step | Zone 4a dates | Note |
|---|---|---|
| Direct sow (spring) | Apr 10 | before last spring freeze |
| Fall planting | Aug 13 | before first fall freeze |
How radishes grow in zone 4a
Direct sow — these seeds go straight in the ground. Hardy — tolerates hard freezes. Harvest runs roughly 25-40 days after planting. These windows come from extension planting tables anchored to zone 4a's median freeze dates — for varieties and local conditions, check with your local extension office.
Next: the full zone 4a calendar · other crops in zone 4a: tomatoes · peppers · cucumbers · zucchini & summer squash · winter squash & pumpkins · snap beans · sweet corn · peas · lettuce · 5 more