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When to Plant Squash (Summer) in Wilkinson County, MS

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

Wilkinson County, Mississippi is in USDA Zone 8a. The average last spring frost is March 3 and the first fall frost is November 23, giving you a growing season of approximately 265 days.

At an elevation of 379 feet, Wilkinson County receives approximately 54.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94ยฐF, providing good warmth for Squash (Summer) during the growing season. Clay soil retains moisture well for Squash (Summer), but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Squash (Summer) root diseases.

Wilkinson County, MS (Zone 8a) Long season
265 days
Last Spring Frost March 3
265 growing days
First Fall Frost November 23

Wilkinson County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (146 days to spare)
Start indoors: Jan 20 Transplant: Mar 3 🍅 Harvest: Apr 21 – Jun 23
Recommended (50%) ✓ Fits season (139 days to spare)
Start indoors: Feb 3 Transplant: Mar 17 🍅 Harvest: May 5 – Jul 7
Safe Start (90%) ✓ Fits season (140 days to spare)
Start indoors: Feb 22 Transplant: Apr 5 🍅 Harvest: May 24 – Jul 26

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 333 gal / 100 sq ft
Squash (Summer) needs ~1,128 GDD — county provides 5,432 GDD Excellent fit

Squash (Summer) Planting Timeline โ€” Wilkinson County, MS

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors February 3 Feb 3 โ€“ Feb 17
Transplant Outdoors March 17 Mar 17 โ€“ Mar 31
Direct Sow March 10 Mar 10 โ€“ Mar 31
Harvest May 5 May 5 โ€“ Jul 7

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 โ€”
May Harvest
June Harvest
July Harvest
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

45โ€“65 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 8a

Growing Season

265 days

Growing Tips for Wilkinson 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Squash (Summer) in Wilkinson County, MS?

Wilkinson County is in Zone 8a with an average last frost of March 3. Plan your Squash (Summer) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Wilkinson County, MS?

Wilkinson County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 3 and first fall frost is November 23.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Wilkinson 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 Wilkinson County, MS. Local conditions may vary. Last updated: April 2026.