When to Plant Borage in Maine
Maine spans USDA hardiness 3b to 7a (zones 3b to 7a on this page). Plant borage 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
Borage planting calendar for Maine, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
May 6
Projected first harvest
Jul 5
Borage is ready to harvest in about 60 days. Full zone 3 guide (both 3a and 3b) →
Borage planting calendar for Maine, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 1
Projected first harvest
Jun 30
Borage is ready to harvest in about 60 days. Full zone 4 guide (both 4a and 4b) →
Borage planting calendar for Maine, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
Apr 26
Projected first harvest
Jun 25
Borage is ready to harvest in about 60 days. Full zone 4 guide (both 4a and 4b) →
Borage planting calendar for Maine, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
Apr 21
Projected first harvest
Jun 20
Borage is ready to harvest in about 60 days. Full zone 5 guide (both 5a and 5b) →
Borage planting calendar for Maine, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
Apr 16
Projected first harvest
Jun 15
Borage is ready to harvest in about 60 days. Full zone 5 guide (both 5a and 5b) →
Borage planting calendar for Maine, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
Apr 11
Projected first harvest
Jun 10
Borage is ready to harvest in about 60 days. Full zone 6 guide (both 6a and 6b) →
Borage planting calendar for Maine, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
Apr 6
Projected first harvest
Jun 5
Borage is ready to harvest in about 60 days. Full zone 6 guide (both 6a and 6b) →
Borage planting calendar for Maine, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Direct sow
Apr 1
Projected first harvest
May 31
Borage is ready to harvest in about 60 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 borage in the HomeSown library. Tap any for its full grow guide.
Common problems with borage
What to watch for, with identification and treatment for each
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