Growing radishes in zone 5
The fastest vegetable in the garden — and the most often ruined by crowding, so thin early. Sow small amounts weekly; in summer heat they bolt and turn pithy, so pause until fall.
Zone 5 covers southern New England, Great Lakes, Iowa, Nebraska, Colorado Front Range — a classic four-season garden climate with room for spring and fall plantings. Zone dates are medians: frost timing varies within a zone with elevation and terrain, so treat these windows as a solid default and refine them with your own city’s dates below.
Make it local
These windows use zone 5's typical frost dates (last frost ~Apr 22, first frost ~Oct 12). For windows computed from your frost dates, run the ZIP code frost lookup and open the planting calendar — it remembers your city. The seed starting scheduler turns the whole seed rack into one printable, date-sorted list.
Frequently asked questions
When do I plant radishes in zone 5?
Direct sow Mar 18 – Apr 1, counted from zone 5's typical last frost around Apr 22. As a hardy crop it tolerates the light frosts on either side of that window.
Can I direct sow radishes in zone 5?
Yes — direct sow Mar 18 – Apr 1. This crop prefers direct sowing; its roots dislike transplanting.
Can I plant radishes for a fall harvest in zone 5?
Yes — sow Aug 31 – Sep 14, counted back from the typical Oct 12 first frost so plants mature before serious cold. Light fall frosts improve flavor rather than ending the crop.