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When to Plant Comfrey in Hinds County, MS

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

Hinds County, Mississippi is in USDA Zone 8a. The average last spring frost is March 17 and the first fall frost is November 11, giving you a growing season of approximately 239 days.

At an elevation of 332 feet, Hinds County receives approximately 59.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92ยฐF, 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. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Comfrey root diseases.

Hinds County, MS (Zone 8a) Long season
239 days
Last Spring Frost March 17
239 growing days
First Fall Frost November 11

Hinds County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (98 days to spare)
Transplant: Mar 16 🍅 Harvest: May 18 – Jul 27
Recommended (50%) ✓ Fits season (99 days to spare)
Transplant: Mar 24 🍅 Harvest: May 26 – Aug 4
Safe Start (90%) ✓ Fits season (95 days to spare)
Transplant: Apr 16 🍅 Harvest: Jun 18 – Aug 27

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.

Soil Compatibility in Hinds County

How your county's soil matches Comfrey's growing requirements.

Soil pH

Your soil pH (5.3โ€“6.5) is more acidic than Comfrey prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Hinds County is excellent for Comfrey โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Comfrey.

How to Plant Comfrey

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Comfrey

4
successive plantings in your 239-day season

Sow every 6.9 weeks. Last sowing by Aug 13 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Comfrey

Comfrey needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Comfrey Needs Rainfall You Supplement Action
Jan โ€” 4.8" 0" โ„๏ธ Dormant
Feb โ€” 4.7" 0" โ„๏ธ Dormant
Mar 4.3" 5.9" 0" โœ… Rainfall sufficient
Apr 4.3" 4.6" 0" โœ… Rainfall sufficient
May 4.3" 5.5" 0" โœ… Rainfall sufficient
Jun 4.3" 5.9" 0" โœ… Rainfall sufficient
Jul 4.3" 6" 0" โœ… Rainfall sufficient
Aug 4.3" 5.3" 0" โœ… Rainfall sufficient
Sep 4.3" 4.1" 0.2" ๐Ÿ’ง Light watering
Oct 4.3" 3.7" 0.6" ๐Ÿ’ง Light watering
Nov 4.3" 4.2" 0.1" ๐Ÿ’ง Light watering
Dec โ€” 4.6" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Hinds County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Comfrey Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Comfrey needs ~1,425 GDD — county provides 4,541 GDD Excellent fit

Comfrey Planting Timeline โ€” Hinds County, MS

Comfrey Planting Calendar

Activity When Date Range
Transplant Outdoors March 24 Mar 24 โ€“ Apr 7
Harvest May 26 May 26 โ€“ Aug 4

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

โ˜€๏ธ Sun

Partial Shade (3-6 hours)

๐Ÿ’ง Water

1"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

239 days in Hinds County

Growing Tips for Comfrey in Hinds County

Direct sow Comfrey outdoors after March 17 in Hinds County when soil has warmed and frost danger has passed.

With Hinds County's clay soil (28% clay), work in 3-4 inches of compost before planting Comfrey. Avoid tilling when soil is wet to prevent compaction.

General growing tips

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 →

Frequently Asked Questions

When should I plant Comfrey in Hinds County, MS?

Hinds County is in Zone 8a with an average last frost of March 17. Plan your Comfrey planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Hinds County, MS?

Hinds County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 17 and first fall frost is November 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Hinds County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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