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When to Plant Edamame in Wagoner County, OK

Wagoner County, Oklahoma Zone 7b May

May to-do list for Wagoner County, Oklahoma

Here's what deserves your attention in Wagoner County, Oklahoma this month. Everything below is tailored to Zone 7b and timed around your local frost dates.

Avg. last frost April 6
Avg. first frost October 29
Soil temp (4") 68°F
Watering Moderate
Pest pressure Moderate
Daylight 13.9 hrs
To set up a strong June, finish these tasks
  • 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.

Wagoner County, Oklahoma is in USDA Zone 7b. The average last spring frost is April 6 and the first fall frost is October 29, giving you a growing season of approximately 206 days.

At an elevation of 640 feet, Wagoner County receives approximately 22 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Edamame during the growing season.

Wagoner County, OK (Zone 7b) Long season
206 days
Last Spring Frost April 6
206 growing days
First Fall Frost October 29
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Wagoner County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (90 days to spare)
Transplant: Mar 28 🍅 Harvest: Jun 13 – Jul 25
Recommended (50%) ✓ Fits season (87 days to spare)
Transplant: Apr 6 🍅 Harvest: Jun 22 – Aug 3
Safe Start (90%) ✓ Fits season (99 days to spare)
Transplant: Apr 19 🍅 Harvest: Jul 5 – Aug 16

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 Wagoner County

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

Soil pH

Your soil pH (6.2–7.3) overlaps with Edamame's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Wagoner County is excellent for Edamame — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.2%). 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 206-day season

Sow every 8.6 weeks. Last sowing by Jul 21 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.5″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 993 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 0.5" 0" ❄️ Dormant
Feb 0.9" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 3.9" 2.7" 1.2" 💧 Light watering
May 3.9" 3.2" 0.7" 💧 Light watering
Jun 3.9" 3.6" 0.3" 💧 Light watering
Jul 3.9" 2.5" 1.4" 💧 Light watering
Aug 3.9" 2.3" 1.6" 💧 Light watering
Sep 3.9" 1.9" 2" 🚿 Regular watering
Oct 3.9" 1.6" 2.3" 🚿 Regular watering
Nov 0.7" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Wagoner 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 ~1,466 GDD — county provides 3,450 GDD Excellent fit

Edamame Planting Timeline — Wagoner County, OK

Edamame Planting Calendar

Activity When Date Range
Direct Sow April 13 Apr 13 – May 4
Harvest June 29 Jun 29 – Aug 10

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · 1-2 times/week

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

206 days in Wagoner County

Growing Tips for Edamame in Wagoner County

Direct sow Edamame outdoors after April 06 in Wagoner 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.

Wagoner County receives only 22" of rain annually. Edamame needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Wagoner County, OK?

Wagoner County is in Zone 7b with an average last frost of April 6. Plan your Edamame planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wagoner County, OK?

Wagoner County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is April 6 and first fall frost is October 29.

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Your Wagoner County Garden Planner — Free

A 24-page printable planner built for Wagoner County (Zone 7b). 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 Wagoner County, OK. 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.