When to Plant Shiso in Zone 6
In USDA zone 6a, start seeds indoors around March 14, transplant or plant outdoors May 2 to July 1, and expect your first harvest around July 1. (6a shown here — see 6a and 6b dates separately below.)
Shiso planting calendar for USDA Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Mar 14
Transplant outdoors
May 2
Projected first harvest
Jul 1
Shiso is ready to harvest in about 60 days, needing roughly 168 frost-free days in zone 6a.
Shiso planting calendar for USDA Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Mar 9
Transplant outdoors
Apr 27
Projected first harvest
Jun 26
Shiso is ready to harvest in about 60 days, needing roughly 178 frost-free days in zone 6b.
Not sure whether you're in 6a or 6b? Set your ZIP in HomeSown for dates tuned to your exact location.
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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