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When to Plant Squash (Summer) in Haskell County, OK

Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.

Haskell County, Oklahoma is in USDA Zone 7a. The average last spring frost is March 28 and the first fall frost is November 3, giving you a growing season of approximately 220 days.

At an elevation of 691 feet, Haskell County receives approximately 29.2 inches of rainfall annually with predominantly loam soil. Summer highs average 91Β°F, providing good warmth for Squash (Summer) during the growing season.

Haskell County, OK (Zone 7a) Long season
220 days
Last Spring Frost March 28
220 growing days
First Fall Frost November 3

Haskell County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.5

Drainage

Well Drained

Monthly Watering Guide for Squash (Summer)

Squash (Summer) 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 (Summer) Needs Rainfall You Supplement Action
Jan β€” 0.7" 0" ❄️ Dormant
Feb β€” 1.1" 0" ❄️ Dormant
Mar 4.3" 1.9" 2.4" 🚿 Regular watering
Apr 4.3" 2.9" 1.4" πŸ’§ Light watering
May 4.3" 4" 0.3" πŸ’§ Light watering
Jun 4.3" 4.8" 0" βœ… Rainfall sufficient
Jul 4.3" 3.8" 0.5" πŸ’§ Light watering
Aug 4.3" 3" 1.3" πŸ’§ Light watering
Sep 4.3" 3.1" 1.2" πŸ’§ Light watering
Oct 4.3" 2.1" 2.2" 🚿 Regular watering
Nov 4.3" 1" 3.3" 🚿 Regular watering
Dec β€” 0.7" 0" ❄️ Dormant

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

Squash (Summer) Planting Timeline β€” Haskell County, OK

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors February 28 Feb 28 – Mar 14
Transplant Outdoors April 11 Apr 11 – Apr 25
Direct Sow April 4 Apr 4 – Apr 25
Harvest May 30 May 30 – Aug 1

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

Month-by-Month Timeline

MonthActivities
January β€”
February Start Indoors
March Start Indoors
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
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

45–65 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7a

πŸ“† Growing Season

220 days in Haskell County

Growing Tips for Haskell County

Direct sow after last frost on mounds. Harvest frequently when fruits are 6-8 inches for best texture. Check plants daily as they grow rapidly in summer heat.

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 (Summer) in Haskell County, OK?

Haskell County is in Zone 7a with an average last frost of March 28. Plan your Squash (Summer) planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Haskell County, OK?

Haskell County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is March 28 and first fall frost is November 3.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Haskell 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 Haskell County, OK. Local conditions may vary. Last updated: April 2026.