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When to Plant Edamame in Rockdale County, GA

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.

Rockdale County, Georgia is in USDA Zone 7b. The average last spring frost is March 22 and the first fall frost is November 13, giving you a growing season of approximately 236 days.

At an elevation of 162 feet, Rockdale County receives approximately 51.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92ยฐF, 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.

Rockdale County, GA (Zone 7b) Long season
236 days
Last Spring Frost March 22
236 growing days
First Fall Frost November 13

Rockdale County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (119 days to spare)
Transplant: Mar 11 🍅 Harvest: May 27 – Jul 8
Recommended (50%) ✓ Fits season (117 days to spare)
Transplant: Mar 22 🍅 Harvest: Jun 7 – Jul 19
Safe Start (90%) ✓ Fits season (115 days to spare)
Transplant: Apr 10 🍅 Harvest: Jun 26 – Aug 7

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 210 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Edamame needs ~1,662 GDD — county provides 4,484 GDD Excellent fit

Edamame Planting Timeline โ€” Rockdale County, GA

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 29 Mar 29 โ€“ Apr 19
Harvest June 14 Jun 14 โ€“ Jul 26

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

75โ€“100 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7b

Growing Season

236 days

Growing Tips for Rockdale County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Edamame in Rockdale County, GA?

Rockdale County is in Zone 7b with an average last frost of March 22. Plan your Edamame planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Rockdale County, GA?

Rockdale County, Georgia is in USDA Hardiness Zone 7b. The average last spring frost is March 22 and first fall frost is November 13.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Rockdale 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 Rockdale County, GA. Local conditions may vary. Last updated: April 2026.