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When to plant Comfrey in Greene County, MS

Greene County's short 252-day growing season means one Comfrey planting between March 15 and March 29. No fall crop in Zone 8b.

When to Plant Comfrey in Greene County, MS

Greene County, Mississippi Zone 8b June

What to do in June

If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 8
Avg. first frost November 15
Soil temp (4") 81°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Harvest comfrey as they ripen

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

To set up a strong July, finish these tasks
  • First harvests: comfrey

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

Greene County, Mississippi is in USDA Zone 8b. The average last spring frost is March 8 and the first fall frost is November 15, giving you a growing season of approximately 252 days.

At an elevation of 469 feet, Greene County receives approximately 49.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°F, 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.

Greene County, MS (Zone 8b) Long season
252 days
Last Spring Frost March 8
252 growing days
First Fall Frost November 15

Greene County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.5

Drainage

Well Drained

Comfrey Planting Risk Windows

Early Start (70% safe) ✓ Fits season (110 days to spare)
Transplant: Mar 10 🍅 Harvest: May 12 – Jul 21
Recommended (50%) ✓ Fits season (112 days to spare)
Transplant: Mar 15 🍅 Harvest: May 17 – Jul 26
Safe Start (90%) ✓ Fits season (104 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 10 – Aug 19

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 Greene County

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

Soil pH

Your soil pH (5.6–6.5) overlaps with Comfrey's range (6.0–7.0), though not a perfect match.

Soil Texture

The clay loam soil in Greene County is excellent for Comfrey — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Comfrey.

How to Plant Comfrey

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

Succession Planting Comfrey

5
successive plantings in your 252-day season

Sow every 6.9 weeks. Last sowing by Aug 17 to harvest before frost.

Comfrey Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 385 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 4.3" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 4.3" 5.3" 0" ✅ Rainfall sufficient
Apr 4.3" 3.9" 0.4" 💧 Light watering
May 4.3" 4.4" 0" ✅ Rainfall sufficient
Jun 4.3" 3.9" 0.4" 💧 Light watering
Jul 4.3" 4.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.6" 0" ✅ Rainfall sufficient
Sep 4.3" 4.1" 0.2" 💧 Light watering
Oct 4.3" 2.7" 1.6" 💧 Light watering
Nov 4.3" 4.2" 0.1" 💧 Light watering
Dec 4.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Greene County). Supplement amounts are based on average rainfall — 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" — every day above 50°F 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 ~1,538 GDD — county provides 5,166 GDD Excellent fit

Comfrey Planting Timeline — Greene County, MS

Comfrey Planting Calendar

Activity When Date Range
Transplant Outdoors March 15 Mar 15 – Mar 29
Harvest May 17 May 17 – Jul 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

252 days in Greene County

Growing Tips for Comfrey in Greene County

Direct sow Comfrey outdoors after March 08 in Greene County when soil has warmed and frost danger has passed.

With Greene 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 Greene County, MS?

Greene County is in Zone 8b with an average last frost of March 8. Plan your Comfrey planting based on this frost date — see the calendar above for exact timing.

What planting zone is Greene County, MS?

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

When should I plant Comfrey in Greene County, MS?

In Greene County, MS, plant Comfrey after the last frost (around March 8) and before the first frost (around November 15). Best results when soil holds above 50°F.

What growing zone is Greene County, MS for Comfrey?

Greene County sits in USDA Zone 8b. Comfrey grows reliably in zones 3a through 9b, so it's a good fit here.

Can Comfrey grow in Greene County's climate?

Yes — Comfrey grows well in Greene County's temperate climate. Greene County averages a 252-day frost-free season, with last frost around March 8 and first frost around November 15.

🌱

Your Greene County Garden Planner — Free

A 22-page printable planner built for Greene County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Greene County, MS. Local conditions may vary. Last updated: June 2026.

Sources & credits

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