When to Plant St. John's Wort in Florida
Florida spans USDA hardiness 8b to 11b (zones 8b to 11b on this page). Plant st. john's wort by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 8b · Zone 9a · Zone 9b · Zone 10a · Zone 10b · Zone 11a · Zone 11b
St. John's Wort planting calendar for Florida, Zone 8b
Average last spring frost
March 20
Average first fall frost
November 20
Start seeds indoors
Jan 23
Transplant outdoors
Apr 3
Projected first harvest
Aug 1
St. John's Wort is ready to harvest in about 120 days. Full zone 8 guide (both 8a and 8b) →
St. John's Wort planting calendar for Florida, 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. Full zone 9 guide (both 9a and 9b) →
St. John's Wort planting calendar for Florida, 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. Full zone 9 guide (both 9a and 9b) →
St. John's Wort planting calendar for Florida, Zone 10a
Average last spring frost
January 30
Average first fall frost
December 30
Start seeds indoors
Dec 5
Transplant outdoors
Feb 13
Projected first harvest
Jun 13
St. John's Wort is ready to harvest in about 120 days. Full zone 10 guide (both 10a and 10b) →
St. John's Wort planting calendar for Florida, Zone 10b
Average last spring frost
January 30
Average first fall frost
December 30
Start seeds indoors
Dec 5
Transplant outdoors
Feb 13
Projected first harvest
Jun 13
St. John's Wort is ready to harvest in about 120 days. Full zone 10 guide (both 10a and 10b) →
St. John's Wort planting calendar for Florida, Zone 11a
Zone 11a doesn't get a seasonal frost — st. john's wort plants on a warm/cool-season calendar instead of frost dates.
Best planting window
Year-round
🌴 Your zone never frosts, so planting is timed to the cooler vs. warmer seasons rather than a frost date.
St. John's Wort is ready to harvest in about 120 days.
St. John's Wort planting calendar for Florida, Zone 11b
Zone 11b doesn't get a seasonal frost — st. john's wort plants on a warm/cool-season calendar instead of frost dates.
Best planting window
Year-round
🌴 Your zone never frosts, so planting is timed to the cooler vs. warmer seasons rather than a frost date.
St. John's Wort is ready to harvest in about 120 days.
Not sure which half-zone you're in? 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
🌱 Grow st. john's wort with a calendar built for your exact yard
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