When to Plant Lemon Verbena in New Hampshire
New Hampshire spans USDA hardiness 4a to 6b (zones 4a to 6b on this page). Plant lemon verbena by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b
Lemon Verbena planting calendar for New Hampshire, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 29
Projected first harvest
Aug 27
Lemon Verbena is ready to harvest in about 90 days. Full zone 4 guide (both 4a and 4b) →
Lemon Verbena planting calendar for New Hampshire, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
May 24
Projected first harvest
Aug 22
Lemon Verbena is ready to harvest in about 90 days. Full zone 4 guide (both 4a and 4b) →
Lemon Verbena planting calendar for New Hampshire, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
May 19
Projected first harvest
Aug 17
Lemon Verbena is ready to harvest in about 90 days. Full zone 5 guide (both 5a and 5b) →
Lemon Verbena planting calendar for New Hampshire, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
May 14
Projected first harvest
Aug 12
Lemon Verbena is ready to harvest in about 90 days. Full zone 5 guide (both 5a and 5b) →
Lemon Verbena planting calendar for New Hampshire, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
May 9
Projected first harvest
Aug 7
Lemon Verbena is ready to harvest in about 90 days. Full zone 6 guide (both 6a and 6b) →
Lemon Verbena planting calendar for New Hampshire, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
May 4
Projected first harvest
Aug 2
Lemon Verbena is ready to harvest in about 90 days. Full zone 6 guide (both 6a and 6b) →
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 lemon verbena in the HomeSown library. Tap any for its full grow guide.
Common problems with lemon verbena
What to watch for, with identification and treatment for each
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