When to Plant Hyssop in Maine
Maine spans USDA hardiness 3b to 7a (zones 3b to 7a on this page). Plant hyssop 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
Hyssop 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
May 20
Projected first harvest
Aug 18
Hyssop is ready to harvest in about 90 days. Full zone 3 guide (both 3a and 3b) →
Hyssop 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 15
Projected first harvest
Aug 13
Hyssop is ready to harvest in about 90 days. Full zone 4 guide (both 4a and 4b) →
Hyssop 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 10
Projected first harvest
Aug 8
Hyssop is ready to harvest in about 90 days. Full zone 4 guide (both 4a and 4b) →
Hyssop 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 5
Projected first harvest
Aug 3
Hyssop is ready to harvest in about 90 days. Full zone 5 guide (both 5a and 5b) →
Hyssop 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
Apr 30
Projected first harvest
Jul 29
Hyssop is ready to harvest in about 90 days. Full zone 5 guide (both 5a and 5b) →
Hyssop 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
Apr 25
Projected first harvest
Jul 24
Hyssop is ready to harvest in about 90 days. Full zone 6 guide (both 6a and 6b) →
Hyssop 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
Apr 20
Projected first harvest
Jul 19
Hyssop is ready to harvest in about 90 days. Full zone 6 guide (both 6a and 6b) →
Hyssop 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 15
Projected first harvest
Jul 14
Hyssop 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 hyssop in the HomeSown library. Tap any for its full grow guide.
Common problems with hyssop
What to watch for, with identification and treatment for each
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