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When to Plant Squash (Winter) in Middlesex County, NJ

Winter squash includes butternut, acorn, delicata, and hubbard varieties grown to full maturity with hard rinds for storage. They develop sweet, dense flesh.

Middlesex County, New Jersey is in USDA Zone 7a. The average last spring frost is March 29 and the first fall frost is November 12, giving you a growing season of approximately 228 days.

At an elevation of 947 feet, Middlesex County receives approximately 45.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94Β°F, providing good warmth for Squash (Winter) during the growing season.

Middlesex County, NJ (Zone 7a) Long season
228 days
Last Spring Frost March 29
228 growing days
First Fall Frost November 12

Middlesex County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.6

Drainage

Well Drained

Monthly Watering Guide for Squash (Winter)

Squash (Winter) needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Squash (Winter) Needs Rainfall You Supplement Action
Jan β€” 3.3" 0" ❄️ Dormant
Feb β€” 3.1" 0" ❄️ Dormant
Mar 4.3" 3.6" 0.7" πŸ’§ Light watering
Apr 4.3" 4.2" 0.1" πŸ’§ Light watering
May 4.3" 4.8" 0" βœ… Rainfall sufficient
Jun 4.3" 4.9" 0" βœ… Rainfall sufficient
Jul 4.3" 4" 0.3" πŸ’§ Light watering
Aug 4.3" 4.3" 0" βœ… Rainfall sufficient
Sep 4.3" 3.4" 0.9" πŸ’§ Light watering
Oct 4.3" 3.7" 0.6" πŸ’§ Light watering
Nov 4.3" 3.2" 1.1" πŸ’§ Light watering
Dec β€” 3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Middlesex County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Squash (Winter) Planting Timeline β€” Middlesex County, NJ

Squash (Winter) Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 – Mar 15
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow April 5 Apr 5 – Apr 26
Harvest July 5 Jul 5 – Aug 30

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

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

80–120 days

πŸ§ͺ Soil pH

Needs 6–7 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7a

πŸ“† Growing Season

228 days in Middlesex County

Growing Tips for Middlesex County

Direct sow after last frost on rich mounds. Allow ample space for sprawling vines. Cure harvested fruits in the sun for 10 days before storing in a cool, dry place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Squash (Winter) in Middlesex County, NJ?

Middlesex County is in Zone 7a with an average last frost of March 29. Plan your Squash (Winter) planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Middlesex County, NJ?

Middlesex County, New Jersey is in USDA Hardiness Zone 7a. The average last spring frost is March 29 and first fall frost is November 12.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Middlesex County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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