When to Plant Edamame in Colony, Oklahoma (73021)

Location

Colony, Oklahoma

ZIP Code

73021

USDA Zone

Last Frost

Sunday, April 5, 2026

📅 Your 2026 Planting Dates

Direct Sow Outdoors

Sunday, April 19, 2026

Based on last frost Sunday, April 5, 2026 · Zone 7b

Pro tip: Sow Edamame directly outdoors 2 weeks after your last frost date — it needs warm soil.

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🌿 Plant Details

Scientific Name Glycine max

Days to Maturity 80 days

Mature Height 18-30"

Spread 6"

☀️ Growing Requirements

☀️

Sun

Full Sun (6-8 hours)

💧

Water

Regular (1-2 inches/week)

↔️

Spacing

6" apart

🌱

Planting Depth

1" deep

Seeds typically germinate in 6-10 days

Ready to Plant Edamame in Colony?

Get your seeds now so they're ready by Sunday, April 19, 2026.

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🤝 Good Companions

CornSquashCarrot

⚠️ Avoid Planting Near

OnionGarlicLeek

🤝

Full Companion Planting Guide for Edamame

See which plants help Edamame thrive, which to keep away, and raised bed layout tips →

🛠️ Supplies You'll Need

🪵 Raised Garden Bed 🌍 Vegetable Garden Soil 🛠️ Hand Trowel Set 🚿 Watering Can

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🌾 Seed Saving Guide

🟢 Easy

✅ Open-pollinated — seeds grow true to parent

When to Harvest Seed

Let pods mature past the green edamame stage — pods will dry and turn tan on the vine.

Processing

Shell dried pods, cure seeds on a screen for 2 weeks to fully dry.

Seed Viability

Up to 4 years when stored cool, dark, and dry.

Pro Tip

Soybeans are self-fertile before flowers open — highly recommended as a beginner seed crop.

🪴

Raised Bed Planting Guides

A 4×8 bed fits 4 per sq ft of Edamame. See plant counts, spacing grids, and companion pairings for every bed size →

Frequently Asked Questions

When should I plant Edamame in Colony, Oklahoma? +

In Colony (Zone 7b), direct sow Edamame outdoors around Sunday, April 19, 2026.

What is the last frost date for Colony, Oklahoma? +

The average last spring frost date for Colony, Oklahoma (ZIP 73021) is around Sunday, April 5, 2026. This is based on NOAA climate normals for USDA Zone 7b.

How long does Edamame take to grow? +

Edamame typically matures in about 80 days from direct sowing. In Colony, that means you can expect harvest around Sunday, April 19, 2026 plus 80 days.

Should I start Edamame indoors or direct sow in Oklahoma? +

Edamame does best when direct sown outdoors. In Colony, sow directly around Sunday, April 19, 2026.

📚 More Edamame Planting Guides

🗺️

Edamame in Oklahoma

Zone-by-zone breakdown · Full state guide

→ 🌡️

Zone 7b Edamame Guide

All cities in your zone · Avg dates

→

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Growing Edamame in Zone 7b

Edamame (Glycine max) is a popular garden vegetable. In Colony, Oklahoma, which is in USDA Hardiness Zone 7b, you should direct sow seeds around Sunday, April 19, 2026.

Your average last frost date is Sunday, April 5, 2026. Edamame grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.