When to Plant Shiso in Zone 4
In USDA zone 4, start seeds indoors around April 3, transplant or plant outdoors May 22 to July 21, and expect your first harvest around July 21.
Shiso planting calendar for USDA Zone 4
Start seeds indoors
Apr 3
Transplant outdoors
May 22
Projected first harvest
Jul 21
Shiso 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 shiso
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 shiso need about 60 days to mature.
Varieties to grow
1 variety of shiso in the HomeSown library. Tap any for its full grow guide.
Common problems with shiso
What to watch for, with identification and treatment for each
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