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When to Plant Melon in Washington 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.

Washington County, Pennsylvania is in USDA Zone 6b. The average last spring frost is April 23 and the first fall frost is October 28, giving you a growing season of approximately 188 days.

At an elevation of 1,083 feet, Washington County receives approximately 42.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Melon during the growing season.

Washington County, PA (Zone 6b) Moderate season
188 days
Last Spring Frost April 23
188 growing days
First Fall Frost October 28

Washington County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Melon Planting Timeline — Washington County, PA

Melon Planting Calendar

Activity When Date Range
Start Indoors March 19 Mar 19 – Apr 2
Transplant Outdoors May 7 May 7 – May 21
Direct Sow April 30 Apr 30 – May 21
Harvest July 16 Jul 16 – Sep 3

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6b

📆 Growing Season

188 days in Washington County

Growing Tips for Washington 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Melon in Washington County, PA?

Washington County is in Zone 6b with an average last frost of April 23. Plan your Melon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Washington County, PA?

Washington County, Pennsylvania is in USDA Hardiness Zone 6b. The average last spring frost is April 23 and first fall frost is October 28.

🌱

Your Washington County Garden Planner — Free

A 22-page printable planner built for Washington County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Washington County, PA. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.