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When to Plant Edamame in Brooks 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.

Brooks County, Texas is in USDA Zone 9b. The average last spring frost is February 10 and the first fall frost is December 13, giving you a growing season of approximately 306 days.

At an elevation of 2,752 feet, Brooks County receives approximately 64.5 inches of rainfall annually with predominantly loam soil. Summer highs average 104°F, so Edamame may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Edamame root diseases.

Brooks County, TX (Zone 9b) Year-round
306 days
Last Spring Frost February 10
306 growing days
First Fall Frost December 13

Brooks County Soil Profile

Soil Type

Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Edamame Planting Timeline — Brooks County, TX

Edamame Planting Calendar

Activity When Date Range
Direct Sow February 17 Feb 17 – Mar 10
Harvest May 5 May 5 – Jun 16

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 9b

📆 Growing Season

306 days in Brooks County

Growing Tips for Brooks 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Edamame in Brooks County, TX?

Brooks County is in Zone 9b with an average last frost of February 10. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Brooks County, TX?

Brooks County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 10 and first fall frost is December 13.

🌱

Your Brooks County Garden Planner — Free

A 22-page printable planner built for Brooks County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Brooks County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

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