Blog

When to Plant Edamame in Sabine County, TX

Sabine County, Texas Zone 9a May

This month in Sabine County, Texas

Here's what deserves your attention in Sabine County, Texas this month. Everything below is tailored to Zone 9a and timed around your local frost dates.

Avg. last frost March 12
Avg. first frost November 15
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
Before June arrives, get these ready
  • First harvests: edamame

Instant PDF download. No spam, unsubscribe any time.

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.

Sabine County, Texas is in USDA Zone 9a. The average last spring frost is March 12 and the first fall frost is November 15, giving you a growing season of approximately 248 days.

At an elevation of 265 feet, Sabine County receives approximately 63.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 93°F, providing good warmth for Edamame during the growing season. Sandy soil warms quickly in spring — great for early planting — 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.

Sabine County, TX (Zone 9a) Long season
248 days
Last Spring Frost March 12
248 growing days
First Fall Frost November 15
Share this guide:

Sabine County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.6-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (129 days to spare)
Transplant: Mar 4 🍅 Harvest: May 20 – Jul 1
Recommended (50%) ✓ Fits season (129 days to spare)
Transplant: Mar 12 🍅 Harvest: May 28 – Jul 9
Safe Start (90%) ✓ Fits season (119 days to spare)
Transplant: Apr 7 🍅 Harvest: Jun 23 – Aug 4

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 Sabine County

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

Soil pH

Your soil pH (5.6–6.5) overlaps with Edamame's range (6.0–7.0), though not a perfect match.

Soil Texture

Sandy soil in Sabine County warms quickly in spring but drains fast. Edamame will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Edamame.

Organic Matter

Organic matter is low (1.8%). Add 2-3 inches of compost before planting Edamame.

How to Plant Edamame

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

Succession Planting Edamame

3
successive plantings in your 248-day season

Sow every 8.6 weeks. Last sowing by Aug 07 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
1.1″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 255 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 1.7" 0" ❄️ Dormant
Feb 2.1" 0" ❄️ Dormant
Mar 3.9" 4.6" 0" ✅ Rainfall sufficient
Apr 3.9" 5.9" 0" ✅ Rainfall sufficient
May 3.9" 9" 0" ✅ Rainfall sufficient
Jun 3.9" 9.7" 0" ✅ Rainfall sufficient
Jul 3.9" 9" 0" ✅ Rainfall sufficient
Aug 3.9" 8.1" 0" ✅ Rainfall sufficient
Sep 3.9" 6" 0" ✅ Rainfall sufficient
Oct 3.9" 3.6" 0.3" 💧 Light watering
Nov 3.9" 2.4" 1.5" 💧 Light watering
Dec 1.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Sabine 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 4,898 GDD Excellent fit

Edamame Planting Timeline — Sabine County, TX

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 19 Mar 19 – Apr 9
Harvest June 4 Jun 4 – Jul 16

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
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

248 days in Sabine County

Growing Tips for Edamame in Sabine County

Direct sow Edamame outdoors after March 12 in Sabine County when soil has warmed and frost danger has passed.

Sandy soil in Sabine County dries quickly — mulch Edamame with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Sabine County, TX?

Sabine County is in Zone 9a with an average last frost of March 12. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sabine County, TX?

Sabine County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 12 and first fall frost is November 15.

🌱

Your Sabine County Garden Planner — Free

A 24-page printable planner built for Sabine County (Zone 9a). 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 Sabine 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.