When to Plant Sea Kale in Zone 4
In USDA zone 4, start seeds indoors around March 20, transplant or plant outdoors May 29 to July 28, and expect your first harvest around July 28.
Sea Kale planting calendar for USDA Zone 4
Start seeds indoors
Mar 20
Transplant outdoors
May 29
Projected first harvest
Jul 28
Sea Kale is ready to harvest in about 60 days. Dates use USDA zone 4a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 4 means for sea kale
Average last spring frost
May 15
Average first fall frost
September 20
Those two dates are what set the schedule above. Zone 4 gives you roughly 128 frost-free days, and sea kale need about 60 days to mature.
Varieties to grow
1 variety of sea kale in the HomeSown library. Tap any for its full grow guide.
Common problems with sea kale
What to watch for, with identification and treatment for each
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