When to Plant Comfrey in Rhode Island
Rhode Island spans USDA hardiness 6b to 7b (zones 6b to 7b on this page). Plant comfrey by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 6b · Zone 7a · Zone 7b
Comfrey planting calendar for Rhode Island, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
Apr 20
Projected first harvest
Jun 19
Comfrey is ready to harvest in about 60 days. Full zone 6 guide (both 6a and 6b) →
Comfrey planting calendar for Rhode Island, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Direct sow
Apr 15
Projected first harvest
Jun 14
Comfrey is ready to harvest in about 60 days. Full zone 7 guide (both 7a and 7b) →
Comfrey planting calendar for Rhode Island, Zone 7b
Average last spring frost
April 10
Average first fall frost
October 30
Direct sow
Apr 10
Projected first harvest
Jun 9
Comfrey 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 comfrey in the HomeSown library. Tap any for its full grow guide.
Common problems with comfrey
What to watch for, with identification and treatment for each
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