When to Plant Collard Greens in Zone 4
In USDA zone 4a, start seeds indoors around March 20, transplant or plant outdoors May 1 to July 15, and expect your first harvest around July 15. Zone 4 also has a fall planting window opening around July 12. (4a shown here — see 4a and 4b dates separately below.)
Collard Greens planting calendar for USDA Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
spring planting
Start seeds indoors
Mar 20
Transplant outdoors
May 1
Projected first harvest
Jul 15
fall planting
Start seeds indoors
Jun 7
Transplant outdoors
Jul 12
Projected first harvest
Sep 25
spring planting
fall planting
Most collard greens mature in about 60 to 75 days depending on the variety, needing roughly 128 frost-free days in zone 4a.
Collard Greens planting calendar for USDA Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
spring planting
Start seeds indoors
Mar 15
Transplant outdoors
Apr 26
Projected first harvest
Jul 10
fall planting
Start seeds indoors
Jun 12
Transplant outdoors
Jul 17
Projected first harvest
Sep 30
spring planting
fall planting
Most collard greens mature in about 60 to 75 days depending on the variety, needing roughly 138 frost-free days in zone 4b.
Not sure whether you're in 4a or 4b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
2 varieties of collard greens in the HomeSown library. Tap any for its full grow guide.
Common problems with collard greens
What to watch for, with identification and treatment for each
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