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When to Plant Acorn Squash in Rockbridge County, VA

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.

Rockbridge County, Virginia is in USDA Zone 6b. The average last spring frost is April 21 and the first fall frost is October 22, giving you a growing season of approximately 184 days.

At an elevation of 159 feet, Rockbridge County receives approximately 46.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Acorn Squash during the growing season.

Rockbridge County, VA (Zone 6b) Moderate season
184 days
Last Spring Frost April 21
184 growing days
First Fall Frost October 22

Rockbridge County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (54 days to spare)
Start indoors: Mar 10 Transplant: Apr 28 🍅 Harvest: Jul 21 – Aug 25
Recommended (50%) ✓ Fits season (51 days to spare)
Start indoors: Mar 17 Transplant: May 5 🍅 Harvest: Jul 28 – Sep 1
Safe Start (90%) ✓ Fits season (42 days to spare)
Start indoors: Apr 9 Transplant: May 28 🍅 Harvest: Aug 20 – Sep 24

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
Acorn Squash needs ~1,440 GDD — county provides 2,944 GDD Excellent fit

Acorn Squash Planting Timeline โ€” Rockbridge County, VA

Acorn Squash Planting Calendar

Activity When Date Range
Start Indoors March 17 Mar 17 โ€“ Mar 31
Transplant Outdoors May 5 May 5 โ€“ May 19
Direct Sow April 28 Apr 28 โ€“ May 19
Harvest July 28 Jul 28 โ€“ Sep 1

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors
April Direct Sow
May Transplant Outdoors Direct Sow
June โ€”
July Harvest
August Harvest
September Harvest
October โ€”
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 6b

Growing Season

184 days

Growing Tips for Rockbridge 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 Rockbridge County, VA?

Rockbridge County is in Zone 6b with an average last frost of April 21. Plan your Acorn Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Rockbridge County, VA?

Rockbridge County, Virginia is in USDA Hardiness Zone 6b. The average last spring frost is April 21 and first fall frost is October 22.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Rockbridge County gardeners in Zone 6b 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 Rockbridge County, VA. Local conditions may vary. Last updated: April 2026.