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When to Plant Edamame in Archer 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.

Archer County, Texas is in USDA Zone 7b. The average last spring frost is March 20 and the first fall frost is November 15, giving you a growing season of approximately 240 days.

At an elevation of 2,151 feet, Archer County receives approximately 59.4 inches of rainfall annually with predominantly loam soil. Summer highs average 93ยฐF, providing good warmth for Edamame during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Edamame root diseases.

Archer County, TX (Zone 7b) Long season
240 days
Last Spring Frost March 20
240 growing days
First Fall Frost November 15

Archer County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (117 days to spare)
Transplant: Mar 12 🍅 Harvest: May 28 – Jul 9
Recommended (50%) ✓ Fits season (121 days to spare)
Transplant: Mar 20 🍅 Harvest: Jun 5 – Jul 17
Safe Start (90%) ✓ Fits season (109 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 29 – Aug 10

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 Archer County

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

Soil pH

Your soil pH (6.4โ€“7.5) overlaps with Edamame's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Archer County is excellent for Edamame โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.3%). 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 240-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
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” 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 โ€” 1.4" 0" โ„๏ธ Dormant
Feb โ€” 2.3" 0" โ„๏ธ Dormant
Mar 3.9" 3.6" 0.3" ๐Ÿ’ง Light watering
Apr 3.9" 6.8" 0" โœ… Rainfall sufficient
May 3.9" 8.3" 0" โœ… Rainfall sufficient
Jun 3.9" 10" 0" โœ… Rainfall sufficient
Jul 3.9" 6.9" 0" โœ… Rainfall sufficient
Aug 3.9" 7.1" 0" โœ… Rainfall sufficient
Sep 3.9" 5.4" 0" โœ… Rainfall sufficient
Oct 3.9" 3.9" 0" โœ… Rainfall sufficient
Nov 3.9" 2.3" 1.6" ๐Ÿ’ง Light watering
Dec โ€” 1.5" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Archer County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 4,740 GDD Excellent fit

Edamame Planting Timeline โ€” Archer County, TX

Edamame Planting Calendar

Activity When Date Range
Direct Sow March 27 Mar 27 โ€“ Apr 17
Harvest June 12 Jun 12 โ€“ Jul 24

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.9"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

75โ€“100 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

240 days in Archer County

Growing Tips for Edamame in Archer County

Direct sow Edamame outdoors after March 20 in Archer County when soil has warmed and frost danger has passed.

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 Archer County, TX?

Archer County is in Zone 7b with an average last frost of March 20. Plan your Edamame planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Archer County, TX?

Archer County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 20 and first fall frost is November 15.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Archer County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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