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When to Plant Butternut Squash in Polk County, AR

Butternut squash is a popular winter squash with a long neck, small seed cavity, and sweet, nutty orange flesh. It stores exceptionally well for months.

Polk County, Arkansas is in USDA Zone 7a. The average last spring frost is April 2 and the first fall frost is November 3, giving you a growing season of approximately 215 days.

At an elevation of 1,323 feet, Polk County receives approximately 54.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91ยฐF, providing good warmth for Butternut Squash during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Butternut Squash root diseases.

Polk County, AR (Zone 7a) Long season
215 days
Last Spring Frost April 2
215 growing days
First Fall Frost November 3

Polk County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (81 days to spare)
Start indoors: Feb 21 Transplant: Apr 4 🍅 Harvest: Jul 4 – Aug 8
Recommended (50%) ✓ Fits season (75 days to spare)
Start indoors: Mar 5 Transplant: Apr 16 🍅 Harvest: Jul 16 – Aug 20
Safe Start (90%) ✓ Fits season (84 days to spare)
Start indoors: Mar 18 Transplant: Apr 29 🍅 Harvest: Jul 29 – Sep 2

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
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Butternut Squash needs ~1,779 GDD — county provides 3,923 GDD Excellent fit

Butternut Squash Planting Timeline โ€” Polk County, AR

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 โ€“ Mar 19
Transplant Outdoors April 16 Apr 16 โ€“ Apr 30
Direct Sow April 9 Apr 9 โ€“ Apr 30
Harvest July 16 Jul 16 โ€“ Aug 20

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

Month-by-Month Timeline

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

85โ€“110 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7a

Growing Season

215 days

Growing Tips for Polk County

Start seeds indoors 3 weeks early or direct sow after frost. Allow 6-8 feet for sprawling vines. Harvest when the skin is hard and uniformly tan. Cure in the sun for 10 days.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Butternut Squash in Polk County, AR?

Polk County is in Zone 7a with an average last frost of April 2. Plan your Butternut Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Polk County, AR?

Polk County, Arkansas is in USDA Hardiness Zone 7a. The average last spring frost is April 2 and first fall frost is November 3.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Polk County gardeners in Zone 7a 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 Polk County, AR. Local conditions may vary. Last updated: April 2026.