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When to Plant Soybeans in Sutton County, TX

Soybeans (edamame) are a high-protein legume that fixes nitrogen in the soil. Fresh green soybeans harvested at the edamame stage are a nutritious snack.

Sutton County, Texas is in USDA Zone 8a. The average last spring frost is March 28 and the first fall frost is November 10, giving you a growing season of approximately 227 days.

At an elevation of 4,068 feet, Sutton County receives approximately 46 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Soybeans may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Soybeans will need more frequent watering and organic matter to retain nutrients.

Sutton County, TX (Zone 8a) Long season
227 days
Last Spring Frost March 28
227 growing days
First Fall Frost November 10

Sutton County Soil Profile

Soil Type

Sandy Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Soybeans Planting Timeline — Sutton County, TX

Soybeans Planting Calendar

Activity When Date Range
Direct Sow April 4 Apr 4 – Apr 25
Harvest June 27 Jun 27 – Aug 22

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 8a

📆 Growing Season

227 days in Sutton County

Growing Tips for Sutton County

Direct sow after soil warms to 60F. Plant in blocks rather than rows for better pollination. Harvest for edamame when pods are plump and bright green.

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 Soybeans in Sutton County, TX?

Sutton County is in Zone 8a with an average last frost of March 28. Plan your Soybeans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sutton County, TX?

Sutton County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 28 and first fall frost is November 10.

🌱

Your Sutton County Garden Planner — Free

A 22-page printable planner built for Sutton County (Zone 8a). 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 Sutton County, TX. Local conditions may vary. Last updated: July 2026.

Sources & credits

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