When to Plant St. John's Wort in Zone 9
In USDA zone 9a, start seeds indoors around January 4, transplant or plant outdoors March 15 to July 13, and expect your first harvest around July 13. (9a shown here — see 9a and 9b dates separately below.)
St. John's Wort planting calendar for USDA Zone 9a
Average last spring frost
March 1
Average first fall frost
December 1
Start seeds indoors
Jan 4
Transplant outdoors
Mar 15
Projected first harvest
Jul 13
St. John's Wort is ready to harvest in about 120 days, needing roughly 275 frost-free days in zone 9a.
St. John's Wort planting calendar for USDA Zone 9b
Average last spring frost
February 15
Average first fall frost
December 15
Start seeds indoors
Dec 21
Transplant outdoors
Mar 1
Projected first harvest
Jun 29
St. John's Wort is ready to harvest in about 120 days, needing roughly 303 frost-free days in zone 9b.
Not sure whether you're in 9a or 9b? 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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