When to plant Comfrey in Presque Isle County, MI
Presque Isle County's short 145-day growing season means one Comfrey planting between May 24 and June 7. No fall crop in Zone 5a.
When to Plant Comfrey in Presque Isle County, MI
Comfrey is a vigorous perennial herb valued as a dynamic accumulator of nutrients. Its leaves make excellent mulch, compost activator, and liquid fertilizer.
Presque Isle County, Michigan is in USDA Zone 5a. The average last spring frost is May 17 and the first fall frost is October 9, giving you a growing season of approximately 145 days.
At an elevation of 1,392 feet, Presque Isle County receives approximately 41 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Comfrey to ensure they mature before fall.
Presque Isle County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Comfrey Planting Timeline — Presque Isle County, MI
Comfrey Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | May 24 | May 24 – Jun 7 |
| Harvest | July 26 | Jul 26 – Oct 4 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Transplant Outdoors |
| June | Transplant Outdoors |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
145 days in Presque Isle County
Growing Tips for Presque Isle 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
Check more plant combinations with our Companion Planting Checker →
Comfrey in Other Locations
Frequently Asked Questions
When should I plant Comfrey in Presque Isle County, MI?
Presque Isle County is in Zone 5a with an average last frost of May 17. Plan your Comfrey planting based on this frost date — see the calendar above for exact timing.
What planting zone is Presque Isle County, MI?
Presque Isle County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 17 and first fall frost is October 9.
When should I plant Comfrey in Presque Isle County, MI?
In Presque Isle County, MI, plant Comfrey after the last frost (around May 17) and before the first frost (around October 9). Best results when soil holds above 50°F.
What growing zone is Presque Isle County, MI for Comfrey?
Presque Isle County sits in USDA Zone 5a. Comfrey grows reliably in zones 3a through 9b, so it's a good fit here.
Can Comfrey grow in Presque Isle County's climate?
Yes — Comfrey grows well in Presque Isle County's temperate climate. Presque Isle County averages a 145-day frost-free season, with last frost around May 17 and first frost around October 9.
Your Presque Isle County Garden Planner — Free
A 22-page printable planner built for Presque Isle County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.