Growing kohlrabi in zone 5
Harvest bulbs at tennis-ball size — bigger gets woody. Kohlrabi matures fast enough to squeeze into gaps between other plantings in both spring and 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 kohlrabi in zone 5?
Direct sow Mar 25 – Apr 8, 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 kohlrabi in zone 5?
Yes — direct sow Mar 25 – Apr 8. This crop prefers direct sowing; its roots dislike transplanting.
Can I plant kohlrabi for a fall harvest in zone 5?
Yes — sow Aug 3 – Aug 17, 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.