When to Plant Basil in Zone 4
In USDA zone 4, start seeds indoors around April 3, transplant or plant outdoors May 29 to August 2, and expect your first harvest around August 2.
Basil planting calendar for USDA Zone 4
Start seeds indoors
Apr 3
Transplant outdoors
May 29
Projected first harvest
Aug 2
Most basil mature in about 60 to 75 days depending on the variety. 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 basil
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 basil need about 60 to 75 days depending on the variety to mature.
Varieties to grow
7 varieties of basil in the HomeSown library. Tap any for its full grow guide.
Common problems with basil
What to watch for, with identification and treatment for each
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