When to Plant Basil in Maine
Maine spans USDA hardiness 3b to 7a (zones 3b to 7a on this page). Plant basil by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 3b · Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a
Basil planting calendar for Maine, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Start seeds indoors
Apr 8
Transplant outdoors
Jun 3
Projected first harvest
Aug 7
Most basil mature in about 60 to 75 days depending on the variety. Full zone 3 guide (both 3a and 3b) →
Basil planting calendar for Maine, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Start seeds indoors
Apr 3
Transplant outdoors
May 29
Projected first harvest
Aug 2
Most basil mature in about 60 to 75 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Basil planting calendar for Maine, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Start seeds indoors
Mar 29
Transplant outdoors
May 24
Projected first harvest
Jul 28
Most basil mature in about 60 to 75 days depending on the variety. Full zone 4 guide (both 4a and 4b) →
Basil planting calendar for Maine, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Start seeds indoors
Mar 24
Transplant outdoors
May 19
Projected first harvest
Jul 23
Most basil mature in about 60 to 75 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Basil planting calendar for Maine, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Start seeds indoors
Mar 19
Transplant outdoors
May 14
Projected first harvest
Jul 18
Most basil mature in about 60 to 75 days depending on the variety. Full zone 5 guide (both 5a and 5b) →
Basil planting calendar for Maine, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Mar 14
Transplant outdoors
May 9
Projected first harvest
Jul 13
Most basil mature in about 60 to 75 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Basil planting calendar for Maine, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Mar 9
Transplant outdoors
May 4
Projected first harvest
Jul 8
Most basil mature in about 60 to 75 days depending on the variety. Full zone 6 guide (both 6a and 6b) →
Basil planting calendar for Maine, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Start seeds indoors
Mar 4
Transplant outdoors
Apr 29
Projected first harvest
Jul 3
Most basil mature in about 60 to 75 days depending on the variety. Full zone 7 guide (both 7a and 7b) →
Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
7 varieties of basil in the HomeSown library. Tap any for its full grow guide.
Common problems with basil
What to watch for, with identification and treatment for each
🌱 Grow basil with a calendar built for your exact yard
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