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When to Plant Edamame in Tallahatchie County, MS

Tallahatchie County, Mississippi Zone 8b May

Top priorities for Tallahatchie County, Mississippi gardeners in May

A quick May briefing for Tallahatchie County, Mississippi gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 16
Avg. first frost November 11
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
A few tasks this May that'll pay off in June
  • First harvests: edamame

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Edamame are soybeans harvested at the immature green stage for a sweet, nutty snack. They are high in protein and easy to grow in warm climates.

Tallahatchie County, Mississippi is in USDA Zone 8b. The average last spring frost is March 16 and the first fall frost is November 11, giving you a growing season of approximately 240 days.

At an elevation of 356 feet, Tallahatchie County receives approximately 50.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93°F, providing good warmth for Edamame during the growing season. Clay soil retains moisture well for Edamame, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Edamame root diseases.

Tallahatchie County, MS (Zone 8b) Long season
240 days
Last Spring Frost March 16
240 growing days
First Fall Frost November 11
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Tallahatchie County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (118 days to spare)
Transplant: Mar 9 🍅 Harvest: May 25 – Jul 6
Recommended (50%) ✓ Fits season (121 days to spare)
Transplant: Mar 16 🍅 Harvest: Jun 1 – Jul 13
Safe Start (90%) ✓ Fits season (116 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 24 – Aug 5

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 Tallahatchie County

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

Soil pH

Your soil pH (5.3–6.3) is more acidic than Edamame prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

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

How to Plant Edamame

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Edamame

3
successive plantings in your 240-day season

Sow every 8.6 weeks. Last sowing by Aug 03 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 42 gal / 100 sq ft

Monthly Watering Guide for Edamame

Edamame needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Edamame Needs Rainfall You Supplement Action
Jan 3.8" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 3.9" 4.8" 0" ✅ Rainfall sufficient
Apr 3.9" 3.5" 0.4" 💧 Light watering
May 3.9" 4.3" 0" ✅ Rainfall sufficient
Jun 3.9" 3.9" 0" ✅ Rainfall sufficient
Jul 3.9" 5.9" 0" ✅ Rainfall sufficient
Aug 3.9" 4.9" 0" ✅ Rainfall sufficient
Sep 3.9" 4" 0" ✅ Rainfall sufficient
Oct 3.9" 3" 0.9" 💧 Light watering
Nov 3.9" 3.7" 0.2" 💧 Light watering
Dec 4.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Tallahatchie County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Edamame 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.

Edamame needs ~1,728 GDD — county provides 4,740 GDD Excellent fit

Edamame Planting Timeline — Tallahatchie County, MS

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 23 Mar 23 – Apr 13
Harvest June 8 Jun 8 – Jul 20

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow
May
June Harvest
July Harvest
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

240 days in Tallahatchie County

Growing Tips for Edamame in Tallahatchie County

Direct sow Edamame outdoors after March 16 in Tallahatchie County when soil has warmed and frost danger has passed.

With Tallahatchie County's clay soil (31% clay), work in 3-4 inches of compost before planting Edamame. Avoid tilling when soil is wet to prevent compaction.

Common pests for Edamame in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after soil is warm. Do not over-fertilize with nitrogen. Harvest when pods are plump and bright green but before they start to yellow. Steam or boil pods before eating.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Edamame in Tallahatchie County, MS?

Tallahatchie County is in Zone 8b with an average last frost of March 16. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Tallahatchie County, MS?

Tallahatchie County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 16 and first fall frost is November 11.

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Your Tallahatchie County Garden Planner — Free

A 24-page printable planner built for Tallahatchie 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 Tallahatchie County, MS. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.