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When to Plant Edamame in Carson 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.

Carson County, Texas is in USDA Zone 7a. The average last spring frost is April 14 and the first fall frost is October 25, giving you a growing season of approximately 194 days.

At an elevation of 2,585 feet, Carson County receives approximately 45.2 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.

Carson County, TX (Zone 7a) Moderate season
194 days
Last Spring Frost April 14
194 growing days
First Fall Frost October 25

Carson County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.9-8.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (74 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 24 – Aug 5
Recommended (50%) ✓ Fits season (75 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 30 – Aug 11
Safe Start (90%) ✓ Fits season (71 days to spare)
Transplant: May 1 🍅 Harvest: Jul 17 – Aug 28

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
1.0″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 666 gal / 100 sq ft
Drought risk

Water stress score is 8/10 โ€” consider drought-tolerant varieties and mulching

Edamame needs ~2,122 GDD — county provides 4,704 GDD Excellent fit

Edamame Planting Timeline โ€” Carson County, TX

Edamame Planting Calendar

Activity When Date Range
Direct Sow April 21 Apr 21 โ€“ May 12
Harvest July 7 Jul 7 โ€“ Aug 18

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow
June โ€”
July Harvest
August Harvest
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 7a

Growing Season

194 days

Growing Tips for Carson 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

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Frequently Asked Questions

When should I plant Edamame in Carson County, TX?

Carson County is in Zone 7a with an average last frost of April 14. Plan your Edamame planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Carson County, TX?

Carson County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is April 14 and first fall frost is October 25.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Carson County gardeners in Zone 7a 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 Carson County, TX. Local conditions may vary. Last updated: April 2026.