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When to Plant Edamame in Chambers County, TX

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.

Chambers County, Texas is in USDA Zone 9a. The average last spring frost is February 12 and the first fall frost is December 6, giving you a growing season of approximately 297 days.

At an elevation of 1 feet, Chambers County receives approximately 66.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 99ยฐF, so Edamame may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Edamame will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Edamame root diseases.

Chambers County, TX (Zone 9a) Year-round
297 days
Last Spring Frost February 12
297 growing days
First Fall Frost December 6

Chambers County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.3-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (189 days to spare)
Transplant: Jan 24 🍅 Harvest: Apr 11 – May 23
Recommended (50%) ✓ Fits season (178 days to spare)
Transplant: Feb 12 🍅 Harvest: Apr 30 – Jun 11
Safe Start (90%) ✓ Fits season (170 days to spare)
Transplant: Mar 6 🍅 Harvest: May 22 – Jul 3

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 181 gal / 100 sq ft
Edamame needs ~2,122 GDD — county provides 7,226 GDD Excellent fit

Edamame Planting Timeline โ€” Chambers County, TX

Edamame Planting Calendar

Activity When Date Range
Direct Sow February 19 Feb 19 โ€“ Mar 12
Harvest May 7 May 7 โ€“ Jun 18

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Direct Sow
March Direct Sow
April โ€”
May Harvest
June Harvest
July โ€”
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 9a

Growing Season

297 days

Growing Tips for Chambers 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 Chambers County, TX?

Chambers County is in Zone 9a with an average last frost of February 12. Plan your Edamame planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Chambers County, TX?

Chambers County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 12 and first fall frost is December 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Chambers County gardeners in Zone 9a 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 Chambers County, TX. Local conditions may vary. Last updated: April 2026.