When to Plant Comfrey in Zone 3
In USDA zone 3, plant outdoors May 30 to July 29, and expect your first harvest around July 29.
Comfrey planting calendar for USDA Zone 3
Direct sow
May 30
Projected first harvest
Jul 29
Comfrey is ready to harvest in about 60 days. Dates use USDA zone 3a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 3 means for comfrey
Average last spring frost
May 30
Average first fall frost
September 10
Those two dates are what set the schedule above. Zone 3 gives you roughly 103 frost-free days, and comfrey need about 60 days to mature.
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
🌱 Grow comfrey with a calendar built for your exact yard
HomeSown turns your ZIP code into a personalized planting calendar, watering reminders, and pest help. Free to start.
Start your free garden →