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When to Plant Edamame in Crenshaw County, AL

Crenshaw County, Alabama Zone 8b May

What to do in May

Your garden in Crenshaw County, Alabama is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 12
Avg. first frost November 13
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
Looking ahead to 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.

Crenshaw County, Alabama is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 13, giving you a growing season of approximately 246 days.

At an elevation of 132 feet, Crenshaw County receives approximately 54.3 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90°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.

Crenshaw County, AL (Zone 8b) Long season
246 days
Last Spring Frost March 12
246 growing days
First Fall Frost November 13
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Crenshaw 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 (126 days to spare)
Transplant: Mar 6 🍅 Harvest: May 22 – Jul 3
Recommended (50%) ✓ Fits season (127 days to spare)
Transplant: Mar 12 🍅 Harvest: May 28 – Jul 9
Safe Start (90%) ✓ Fits season (124 days to spare)
Transplant: Apr 1 🍅 Harvest: Jun 17 – Jul 29

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 Crenshaw 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 Crenshaw County is excellent for Edamame — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.3%). 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 246-day season

Sow every 8.6 weeks. Last sowing by Aug 05 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 4.4" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 3.9" 5.8" 0" ✅ Rainfall sufficient
Apr 3.9" 3.9" 0" ✅ Rainfall sufficient
May 3.9" 4.2" 0" ✅ Rainfall sufficient
Jun 3.9" 4.4" 0" ✅ Rainfall sufficient
Jul 3.9" 5.9" 0" ✅ Rainfall sufficient
Aug 3.9" 5.1" 0" ✅ Rainfall sufficient
Sep 3.9" 4" 0" ✅ Rainfall sufficient
Oct 3.9" 3.8" 0.1" 💧 Light watering
Nov 3.9" 3.9" 0" ✅ Rainfall sufficient
Dec 4.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Crenshaw 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 ~1,531 GDD — county provides 4,305 GDD Excellent fit

Edamame Planting Timeline — Crenshaw County, AL

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 19 Mar 19 – Apr 9
Harvest June 4 Jun 4 – Jul 16

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 · Natural rainfall sufficient

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

246 days in Crenshaw County

Growing Tips for Edamame in Crenshaw County

Direct sow Edamame outdoors after March 12 in Crenshaw County when soil has warmed and frost danger has passed.

With Crenshaw 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 Crenshaw County, AL?

Crenshaw County is in Zone 8b with an average last frost of March 12. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crenshaw County, AL?

Crenshaw County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 13.

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Your Crenshaw County Garden Planner — Free

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

Sources & credits

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