How long does comfrey take to grow?

Comfrey is ready to harvest in about 60 days, measured from planting.

When to Plant Comfrey

Plant comfrey by your frost dates, not the calendar: plant outdoors right around your last frost date. Pick your USDA zone below for exact dates.

Comfrey planting calendar

🌿

Direct sow

Apr 15

🌾

Projected first harvest

Jun 14

JJan

FFeb

MMar

AApr

MMay

JJun

JJul

AAug

SSep

OOct

NNov

DDec

🌱 Start indoors🌿 Growing outside🌾 HarvestTodayZone 7a — approximate

Comfrey is ready to harvest in about 60 days. Dates above use zone 7 as a reference point. Pick your zone below, or 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.

Bocking 14 Comfrey →

Common problems with comfrey

What to watch for, with identification and treatment for each

Four-Lined Plant Bug Common Stalk Borer Groundhogs Ants Aphids Armyworms Anthracnose Damping-Off Frost & Cold Injury Gray Mold Herbicide Injury Mosaic Virus

🌱 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 →

When to plant comfrey in your zone

Zone 3 →Zone 4 →Zone 5 →Zone 6 →Zone 7 →Zone 8 →Zone 9 →Zone 10 →