When to Plant Lemon Balm in Zone 4
In USDA zone 4a, plant outdoors May 1 to July 10, and expect your first harvest around July 10. (4a shown here — see 4a and 4b dates separately below.)
Lemon Balm planting calendar for USDA Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 1
Projected first harvest
Jul 10
Lemon Balm is ready to harvest in about 70 days, needing roughly 128 frost-free days in zone 4a.
Lemon Balm planting calendar for USDA Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
Apr 26
Projected first harvest
Jul 5
Lemon Balm is ready to harvest in about 70 days, needing roughly 138 frost-free days in zone 4b.
Not sure whether you're in 4a or 4b? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of lemon balm in the HomeSown library. Tap any for its full grow guide.
Common problems with lemon balm
What to watch for, with identification and treatment for each
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