When to Plant Komatsuna in Zone 5
In USDA zone 5a, plant outdoors April 21 to May 31, and expect your first harvest around May 31. Zone 5 also has a fall planting window opening around August 6. (5a shown here — see 5a and 5b dates separately below.)
Komatsuna planting calendar for USDA Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
spring planting
Direct sow
Apr 21
Projected first harvest
May 31
fall planting
Direct sow
Aug 6
Projected first harvest
Sep 15
spring planting
fall planting
Komatsuna is ready to harvest in about 40 days, needing roughly 149 frost-free days in zone 5a.
Komatsuna planting calendar for USDA Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
spring planting
Direct sow
Apr 16
Projected first harvest
May 26
fall planting
Direct sow
Aug 10
Projected first harvest
Sep 19
spring planting
fall planting
Komatsuna is ready to harvest in about 40 days, needing roughly 158 frost-free days in zone 5b.
Not sure whether you're in 5a or 5b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of komatsuna in the HomeSown library. Tap any for its full grow guide.
Common problems with komatsuna
What to watch for, with identification and treatment for each
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