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When to Plant Acorn Squash in Beaver County, UT

Acorn squash is a small winter squash with dark green, ribbed skin and mildly sweet orange flesh. It is perfect for stuffing and roasting as individual servings.

Beaver County, Utah is in USDA Zone 5b. The average last spring frost is May 21 and the first fall frost is September 29, giving you a growing season of approximately 131 days.

At an elevation of 7,589 feet, Beaver County receives approximately 24.3 inches of rainfall annually with predominantly loam soil. Summer highs average 85ยฐF, providing good warmth for Acorn Squash during the growing season.

Beaver County, UT (Zone 5b) Short season
131 days
Last Spring Frost May 21
131 growing days
First Fall Frost September 29

Beaver County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Apr 8 Transplant: May 27 🍅 Harvest: Aug 19 – Sep 23
Recommended (50%) ✗ May not fit
Start indoors: Apr 16 Transplant: Jun 4 🍅 Harvest: Aug 27 – Oct 1
Safe Start (90%) ✗ May not fit
Start indoors: May 6 Transplant: Jun 24 🍅 Harvest: Sep 16 – Oct 21

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
0.6″/week
Watering frequency 1-2 times/week
Season total 729 gal / 100 sq ft
Drought risk

Water stress score is 10/10 โ€” consider drought-tolerant varieties and mulching

Acorn Squash needs ~1,238 GDD — county provides 1,801 GDD Excellent fit

Acorn Squash Planting Timeline โ€” Beaver County, UT

Acorn Squash Planting Calendar

Activity When Date Range
Start Indoors April 16 Apr 16 โ€“ Apr 30
Transplant Outdoors June 4 Jun 4 โ€“ Jun 18
Direct Sow May 28 May 28 โ€“ Jun 18
Harvest August 27 Aug 27 โ€“ Oct 1

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

80โ€“100 days

Soil pH

5.5 โ€“ 7

USDA Zone

Zone 5b

Growing Season

131 days

Growing Tips for Beaver County

Direct sow after last frost. Harvest when the ground spot turns orange and the skin is hard. Acorn squash has a shorter storage life than butternut, lasting about 2 months.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Acorn Squash in Beaver County, UT?

Beaver County is in Zone 5b with an average last frost of May 21. Plan your Acorn Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Beaver County, UT?

Beaver County, Utah is in USDA Hardiness Zone 5b. The average last spring frost is May 21 and first fall frost is September 29.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Beaver County gardeners in Zone 5b 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 Beaver County, UT. Local conditions may vary. Last updated: April 2026.