When to Plant Rosemary in Zone 6
In USDA zone 6a, start seeds indoors around February 14, transplant or plant outdoors May 9 to August 7, and expect your first harvest around August 7. (6a shown here — see 6a and 6b dates separately below.)
Rosemary planting calendar for USDA Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Feb 14
Transplant outdoors
May 9
Projected first harvest
Aug 7
Most rosemary mature in about 90 days, needing roughly 168 frost-free days in zone 6a.
Rosemary planting calendar for USDA Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Feb 9
Transplant outdoors
May 4
Projected first harvest
Aug 2
Most rosemary mature in about 90 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
2 varieties of rosemary in the HomeSown library. Tap any for its full grow guide.
Common problems with rosemary
What to watch for, with identification and treatment for each
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