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When to Plant Squash (Winter) in Sunflower County, MS

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

Sunflower County, Mississippi is in USDA Zone 8a. The average last spring frost is March 8 and the first fall frost is November 15, giving you a growing season of approximately 252 days.

At an elevation of 376 feet, Sunflower County receives approximately 49.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 97ยฐF, so Squash (Winter) may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Squash (Winter), but amend with compost to improve drainage and prevent root rot.

Sunflower County, MS (Zone 8a) Long season
252 days
Last Spring Frost March 8
252 growing days
First Fall Frost November 15

Sunflower County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (93 days to spare)
Start indoors: Feb 2 Transplant: Mar 16 🍅 Harvest: Jun 8 – Aug 3
Recommended (50%) ✓ Fits season (98 days to spare)
Start indoors: Feb 8 Transplant: Mar 22 🍅 Harvest: Jun 14 – Aug 9
Safe Start (90%) ✓ Fits season (94 days to spare)
Start indoors: Feb 26 Transplant: Apr 9 🍅 Harvest: Jul 2 – 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
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 385 gal / 100 sq ft
Squash (Winter) needs ~2,275 GDD — county provides 5,733 GDD Excellent fit

Squash (Winter) Planting Timeline โ€” Sunflower County, MS

Squash (Winter) Planting Calendar

Activity When Date Range
Start Indoors February 8 Feb 8 โ€“ Feb 22
Transplant Outdoors March 22 Mar 22 โ€“ Apr 5
Direct Sow March 15 Mar 15 โ€“ Apr 5
Harvest June 14 Jun 14 โ€“ Aug 9

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

Month-by-Month Timeline

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

80โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8a

Growing Season

252 days

Growing Tips for Sunflower 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Squash (Winter) in Sunflower County, MS?

Sunflower County is in Zone 8a with an average last frost of March 8. Plan your Squash (Winter) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Sunflower County, MS?

Sunflower County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 8 and first fall frost is November 15.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Sunflower County gardeners in Zone 8a 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 Sunflower County, MS. Local conditions may vary. Last updated: April 2026.