When to Plant Comfrey in Cheshire County, NH
Comfrey is a vigorous perennial herb valued as a dynamic accumulator of nutrients. Its leaves make excellent mulch, compost activator, and liquid fertilizer.
Cheshire County, New Hampshire is in USDA Zone 5a. The average last spring frost is May 8 and the first fall frost is October 10, giving you a growing season of approximately 155 days.
At an elevation of 708 feet, Cheshire County receives approximately 47 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Comfrey during the growing season.
Cheshire County Soil Profile
Soil Type
Silt Loam
Soil pH
4.8-6.5
Drainage
Well Drained
Plant Planting Risk Windows
Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.
Plant Water Budget
Comfrey Planting Timeline — Cheshire County, NH
Comfrey Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 15 | May 15 – May 29 |
| Harvest | July 17 | Jul 17 – Sep 25 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Partial Shade (3-6 hours)
Water
Moderate — regular watering
Days to Maturity
60–90 days
Soil pH
6 – 7
USDA Zone
Zone 5a
Growing Season
155 days
Growing Tips for Cheshire County
Plant root cuttings 2 inches deep. Choose Bocking 14 variety to prevent self-seeding. Cut leaves 3-4 times per season for mulch or compost. Avoid planting near pathways as it spreads.
Companion Planting
Good Companions
Level Up Your Garden
Comfrey in Other Locations
Frequently Asked Questions
When should I plant Comfrey in Cheshire County, NH?
Cheshire County is in Zone 5a with an average last frost of May 8. Plan your Comfrey planting based on this frost date — see the calendar above for exact timing.
What planting zone is Cheshire County, NH?
Cheshire County, New Hampshire is in USDA Hardiness Zone 5a. The average last spring frost is May 8 and first fall frost is October 10.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Cheshire County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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