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When to Plant Comfrey in Elmore County, AL

Comfrey is a vigorous perennial herb valued as a dynamic accumulator of nutrients. Its leaves make excellent mulch, compost activator, and liquid fertilizer.

Elmore County, Alabama is in USDA Zone 7b. The average last spring frost is March 15 and the first fall frost is November 8, giving you a growing season of approximately 238 days.

At an elevation of 397 feet, Elmore County receives approximately 49.6 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91ยฐF, providing good warmth for Comfrey during the growing season. Clay soil retains moisture well for Comfrey, but amend with compost to improve drainage and prevent root rot.

Elmore County, AL (Zone 7b) Long season
238 days
Last Spring Frost March 15
238 growing days
First Fall Frost November 8

Elmore County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (100 days to spare)
Transplant: Mar 14 🍅 Harvest: May 16 – Jul 25
Recommended (50%) ✓ Fits season (98 days to spare)
Transplant: Mar 22 🍅 Harvest: May 24 – Aug 2
Safe Start (90%) ✓ Fits season (95 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 15 – Aug 24

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

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 264 gal / 100 sq ft
Comfrey needs ~1,369 GDD — county provides 4,343 GDD Excellent fit

Comfrey Planting Timeline โ€” Elmore County, AL

Comfrey Planting Calendar

Activity When Date Range
Transplant Outdoors March 22 Mar 22 โ€“ Apr 5
Harvest May 24 May 24 โ€“ Aug 2

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Transplant Outdoors
April Transplant Outdoors
May Harvest
June Harvest
July Harvest
August Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Partial Shade (3-6 hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“90 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

238 days

Growing Tips for Elmore 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

Frequently Asked Questions

When should I plant Comfrey in Elmore County, AL?

Elmore County is in Zone 7b with an average last frost of March 15. Plan your Comfrey planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Elmore County, AL?

Elmore County, Alabama is in USDA Hardiness Zone 7b. The average last spring frost is March 15 and first fall frost is November 8.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Elmore County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Elmore County, AL. Local conditions may vary. Last updated: April 2026.