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When to Plant Edamame in Craig County, OK

Craig County, Oklahoma Zone 7a May

May to-do list for Craig County, Oklahoma

May is a pivotal month for Craig County, Oklahoma gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 7
Avg. first frost October 27
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 14 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.

Craig County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 7 and the first fall frost is October 27, giving you a growing season of approximately 203 days.

At an elevation of 906 feet, Craig County receives approximately 25.6 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Edamame during the growing season.

Craig County, OK (Zone 7a) Long season
203 days
Last Spring Frost April 7
203 growing days
First Fall Frost October 27

Craig County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (88 days to spare)
Transplant: Mar 30 🍅 Harvest: Jun 15 – Jul 27
Recommended (50%) ✓ Fits season (84 days to spare)
Transplant: Apr 7 🍅 Harvest: Jun 23 – Aug 4
Safe Start (90%) ✓ Fits season (86 days to spare)
Transplant: Apr 21 🍅 Harvest: Jul 7 – Aug 18

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 Craig County

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

Soil pH

Your soil pH (6.5–7.3) overlaps with Edamame's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.5%). 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 203-day season

Sow every 8.6 weeks. Last sowing by Jul 19 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.5″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 669 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 0.7" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.6" 0" ❄️ Dormant
Apr 3.9" 2.6" 1.3" 💧 Light watering
May 3.9" 3.8" 0.1" 💧 Light watering
Jun 3.9" 4.2" 0" ✅ Rainfall sufficient
Jul 3.9" 3" 0.9" 💧 Light watering
Aug 3.9" 3.3" 0.6" 💧 Light watering
Sep 3.9" 2.3" 1.6" 💧 Light watering
Oct 3.9" 1.5" 2.4" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Craig 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 3,400 GDD Excellent fit

Edamame Planting Timeline — Craig County, OK

Edamame Planting Calendar

Activity When Date Range
Direct Sow April 14 Apr 14 – May 5
Harvest June 30 Jun 30 – Aug 11

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

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 7a

📆 Growing Season

203 days in Craig County

Growing Tips for Edamame in Craig County

Direct sow Edamame outdoors after April 07 in Craig 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 Craig County, OK?

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

What planting zone is Craig County, OK?

Craig County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 7 and first fall frost is October 27.

🌱

Your Craig County Garden Planner — Free

A 24-page printable planner built for Craig County (Zone 7a). 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 Craig 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.