When to Plant St. John's Wort in Zone 7
In USDA zone 7a, start seeds indoors around February 18, transplant or plant outdoors April 29 to August 27, and expect your first harvest around August 27. (7a shown here — see 7a and 7b dates separately below.)
St. John's Wort planting calendar for USDA Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Start seeds indoors
Feb 18
Transplant outdoors
Apr 29
Projected first harvest
Aug 27
St. John's Wort is ready to harvest in about 120 days, needing roughly 188 frost-free days in zone 7a.
St. John's Wort planting calendar for USDA Zone 7b
Average last spring frost
April 10
Average first fall frost
October 30
Start seeds indoors
Feb 13
Transplant outdoors
Apr 24
Projected first harvest
Aug 22
St. John's Wort is ready to harvest in about 120 days, needing roughly 203 frost-free days in zone 7b.
Not sure whether you're in 7a or 7b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of st. john's wort in the HomeSown library. Tap any for its full grow guide.
Common problems with st. john's wort
What to watch for, with identification and treatment for each
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