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When to Plant Edamame in York County, PA

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.

York County, Pennsylvania is in USDA Zone 6b. The average last spring frost is April 13 and the first fall frost is October 28, giving you a growing season of approximately 198 days.

At an elevation of 748 feet, York County receives approximately 45.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Edamame during the growing season.

York County, PA (Zone 6b) Moderate season
198 days
Last Spring Frost April 13
198 growing days
First Fall Frost October 28

York County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (76 days to spare)
Transplant: Apr 8 🍅 Harvest: Jun 24 – Aug 5
Recommended (50%) ✓ Fits season (79 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 29 – Aug 10
Safe Start (90%) ✓ Fits season (74 days to spare)
Transplant: Apr 30 🍅 Harvest: Jul 16 – Aug 27

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 69 gal / 100 sq ft
Edamame needs ~1,334 GDD — county provides 3,019 GDD Excellent fit

Edamame Planting Timeline โ€” York County, PA

Edamame Planting Calendar

Activity When Date Range
Direct Sow April 20 Apr 20 โ€“ May 11
Harvest July 6 Jul 6 โ€“ Aug 17

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

75โ€“100 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6b

Growing Season

198 days

Growing Tips for York County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Edamame in York County, PA?

York County is in Zone 6b with an average last frost of April 13. Plan your Edamame planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is York County, PA?

York County, Pennsylvania is in USDA Hardiness Zone 6b. The average last spring frost is April 13 and first fall frost is October 28.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help York County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

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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 York County, PA. Local conditions may vary. Last updated: April 2026.