When to Plant Shiso in Zone 9
In USDA zone 9, start seeds indoors around January 18, transplant or plant outdoors March 8 to May 7, and expect your first harvest around May 7.
Shiso planting calendar for USDA Zone 9
Start seeds indoors
Jan 18
Transplant outdoors
Mar 8
Projected first harvest
May 7
Shiso is ready to harvest in about 60 days. Dates use USDA zone 9a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 9 means for shiso
Average last spring frost
March 1
Average first fall frost
December 1
Those two dates are what set the schedule above. Zone 9 gives you roughly 275 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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