When to Plant Boneset in Maine
Maine spans USDA hardiness 3b to 7a (zones 3b to 7a on this page). Plant boneset 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
Boneset planting calendar for Maine, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Start seeds indoors
Mar 25
Transplant outdoors
Jun 3
Projected first harvest
Sep 1
Boneset is ready to harvest in about 90 days. Full zone 3 guide (both 3a and 3b) →
Boneset planting calendar for Maine, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Start seeds indoors
Mar 20
Transplant outdoors
May 29
Projected first harvest
Aug 27
Boneset is ready to harvest in about 90 days. Full zone 4 guide (both 4a and 4b) →
Boneset planting calendar for Maine, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Start seeds indoors
Mar 15
Transplant outdoors
May 24
Projected first harvest
Aug 22
Boneset is ready to harvest in about 90 days. Full zone 4 guide (both 4a and 4b) →
Boneset planting calendar for Maine, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Start seeds indoors
Mar 10
Transplant outdoors
May 19
Projected first harvest
Aug 17
Boneset is ready to harvest in about 90 days. Full zone 5 guide (both 5a and 5b) →
Boneset planting calendar for Maine, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Start seeds indoors
Mar 5
Transplant outdoors
May 14
Projected first harvest
Aug 12
Boneset is ready to harvest in about 90 days. Full zone 5 guide (both 5a and 5b) →
Boneset planting calendar for Maine, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Start seeds indoors
Feb 28
Transplant outdoors
May 9
Projected first harvest
Aug 7
Boneset is ready to harvest in about 90 days. Full zone 6 guide (both 6a and 6b) →
Boneset planting calendar for Maine, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Start seeds indoors
Feb 23
Transplant outdoors
May 4
Projected first harvest
Aug 2
Boneset is ready to harvest in about 90 days. Full zone 6 guide (both 6a and 6b) →
Boneset planting calendar for Maine, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Start seeds indoors
Feb 18
Transplant outdoors
Apr 29
Projected first harvest
Jul 28
Boneset is ready to harvest in about 90 days. 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
1 variety of boneset in the HomeSown library. Tap any for its full grow guide.
Common problems with boneset
What to watch for, with identification and treatment for each
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