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When to Plant Edamame in Freestone County, TX

Freestone County, Texas Zone 8b May

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Avg. last frost March 11
Avg. first frost November 13
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
Before June arrives, get these ready
  • First harvests: edamame

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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.

Freestone County, Texas is in USDA Zone 8b. The average last spring frost is March 11 and the first fall frost is November 13, giving you a growing season of approximately 247 days.

At an elevation of 398 feet, Freestone County receives approximately 71.4 inches of rainfall annually with predominantly clay soil. Summer highs average 93°F, 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.

Freestone County, TX (Zone 8b) Long season
247 days
Last Spring Frost March 11
247 growing days
First Fall Frost November 13
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Freestone County Soil Profile

Soil Type

Clay

Soil pH

6.9-7.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (125 days to spare)
Transplant: Mar 6 🍅 Harvest: May 22 – Jul 3
Recommended (50%) ✓ Fits season (128 days to spare)
Transplant: Mar 11 🍅 Harvest: May 27 – Jul 8
Safe Start (90%) ✓ Fits season (123 days to spare)
Transplant: Apr 3 🍅 Harvest: Jun 19 – Jul 31

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.

Soil Compatibility in Freestone County

How your county's soil matches Edamame's growing requirements.

Soil pH

Your soil pH (6.9–7.9) is more alkaline than Edamame prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Heavy clay soil (46% clay) in Freestone County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Edamame.

How to Plant Edamame

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Succession Planting Edamame

3
successive plantings in your 247-day season

Sow every 8.6 weeks. Last sowing by Aug 05 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Edamame

Edamame needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Edamame Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 3.9" 4.8" 0" ✅ Rainfall sufficient
Apr 3.9" 7" 0" ✅ Rainfall sufficient
May 3.9" 12.2" 0" ✅ Rainfall sufficient
Jun 3.9" 10.3" 0" ✅ Rainfall sufficient
Jul 3.9" 8.2" 0" ✅ Rainfall sufficient
Aug 3.9" 9.1" 0" ✅ Rainfall sufficient
Sep 3.9" 6.1" 0" ✅ Rainfall sufficient
Oct 3.9" 5" 0" ✅ Rainfall sufficient
Nov 3.9" 2.3" 1.6" 💧 Light watering
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Freestone County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Edamame Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Edamame needs ~1,728 GDD — county provides 4,878 GDD Excellent fit

Edamame Planting Timeline — Freestone County, TX

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 18 Mar 18 – Apr 8
Harvest June 3 Jun 3 – Jul 15

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

247 days in Freestone County

Growing Tips for Edamame in Freestone County

Direct sow Edamame outdoors after March 11 in Freestone County when soil has warmed and frost danger has passed.

With Freestone County's clay soil (46% clay), work in 3-4 inches of compost before planting Edamame. Avoid tilling when soil is wet to prevent compaction.

Common pests for Edamame in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

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 Freestone County, TX?

Freestone County is in Zone 8b with an average last frost of March 11. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Freestone County, TX?

Freestone County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 11 and first fall frost is November 13.

🌱

Your Freestone County Garden Planner — Free

A 24-page printable planner built for Freestone County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Freestone County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

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