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When to Plant Melon in Warren County, PA

Melons are warm-season vine crops that produce sweet, juicy fruits in many varieties including muskmelon and honeydew. They need a long, hot growing season.

Warren County, Pennsylvania is in USDA Zone 5a. The average last spring frost is May 13 and the first fall frost is October 13, giving you a growing season of approximately 153 days.

At an elevation of 1,158 feet, Warren County receives approximately 43.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Melon to ensure they mature before fall.

Warren County, PA (Zone 5a) Moderate season
153 days
Last Spring Frost May 13
153 growing days
First Fall Frost October 13

Warren County Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (22 days to spare)
Start indoors: Mar 31 Transplant: May 19 🍅 Harvest: Jul 28 – Sep 15
Recommended (50%) ✓ Fits season (20 days to spare)
Start indoors: Apr 8 Transplant: May 27 🍅 Harvest: Aug 5 – Sep 23
Safe Start (90%) ✓ Fits season (15 days to spare)
Start indoors: Apr 27 Transplant: Jun 15 🍅 Harvest: Aug 24 – Oct 12

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
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Melon needs ~1,105 GDD — county provides 1,989 GDD Excellent fit

Melon Planting Timeline โ€” Warren County, PA

Melon Planting Calendar

Activity When Date Range
Start Indoors April 8 Apr 8 โ€“ Apr 22
Transplant Outdoors May 27 May 27 โ€“ Jun 10
Direct Sow May 20 May 20 โ€“ Jun 10
Harvest August 5 Aug 5 โ€“ Sep 23

Plant 1" deep ยท 30" apart ยท Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

70โ€“100 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 5a

Growing Season

153 days

Growing Tips for Warren County

Start seeds indoors 3-4 weeks before transplanting. Plant on raised mounds of compost-enriched soil. Reduce watering as fruits ripen to concentrate sweetness.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Cucumber

Level Up Your Garden

Frequently Asked Questions

When should I plant Melon in Warren County, PA?

Warren County is in Zone 5a with an average last frost of May 13. Plan your Melon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Warren County, PA?

Warren County, Pennsylvania is in USDA Hardiness Zone 5a. The average last spring frost is May 13 and first fall frost is October 13.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Warren County gardeners in Zone 5a 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 Warren County, PA. Local conditions may vary. Last updated: April 2026.