When to Plant Collard Greens in Zone 3
In USDA zone 3a, start seeds indoors around April 4, transplant or plant outdoors May 16 to July 30, and expect your first harvest around July 30. Zone 3 also has a fall planting window opening around July 2. (3a shown here — see 3a and 3b dates separately below.)
Collard Greens planting calendar for USDA Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
spring planting
Start seeds indoors
Apr 4
Transplant outdoors
May 16
Projected first harvest
Jul 30
fall planting
Start seeds indoors
May 28
Transplant outdoors
Jul 2
Projected first harvest
Sep 15
spring planting
fall planting
Most collard greens mature in about 60 to 75 days depending on the variety, needing roughly 103 frost-free days in zone 3a.
Collard Greens planting calendar for USDA Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
spring planting
Start seeds indoors
Mar 25
Transplant outdoors
May 6
Projected first harvest
Jul 20
fall planting
Start seeds indoors
Jun 2
Transplant outdoors
Jul 7
Projected first harvest
Sep 20
spring planting
fall planting
Most collard greens mature in about 60 to 75 days depending on the variety, needing roughly 118 frost-free days in zone 3b.
Not sure whether you're in 3a or 3b? 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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