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When to Plant Acorn Squash in Rappahannock 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.

Rappahannock County, Virginia is in USDA Zone 6b. The average last spring frost is April 21 and the first fall frost is October 19, giving you a growing season of approximately 181 days.

At an elevation of 370 feet, Rappahannock County receives approximately 46.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Acorn Squash during the growing season.

Rappahannock County, VA (Zone 6b) Moderate season
181 days
Last Spring Frost April 21
181 growing days
First Fall Frost October 19

Rappahannock County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (49 days to spare)
Start indoors: Mar 11 Transplant: Apr 29 🍅 Harvest: Jul 22 – Aug 26
Recommended (50%) ✓ Fits season (48 days to spare)
Start indoors: Mar 17 Transplant: May 5 🍅 Harvest: Jul 28 – Sep 1
Safe Start (90%) ✓ Fits season (38 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.

Soil Compatibility in Rappahannock County

How your county's soil matches Acorn Squash's growing requirements.

Soil pH

Your soil pH (5.5โ€“6.9) is within Acorn Squash's preferred range (5.5โ€“7.0).

Soil Texture

The silt loam soil in Rappahannock County is excellent for Acorn Squash โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Acorn Squash.

How to Plant Acorn Squash

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Acorn Squash

2
successive plantings in your 181-day season

Sow every 9.1 weeks. Last sowing by Jul 11 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
1.1″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 19 gal / 100 sq ft

Monthly Watering Guide for Acorn Squash

Acorn Squash needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Acorn Squash Needs Rainfall You Supplement Action
Jan โ€” 3.9" 0" โ„๏ธ Dormant
Feb โ€” 4" 0" โ„๏ธ Dormant
Mar โ€” 4.4" 0" โ„๏ธ Dormant
Apr 4.8" 3.5" 1.3" ๐Ÿ’ง Light watering
May 4.8" 3.6" 1.2" ๐Ÿ’ง Light watering
Jun 4.8" 4.6" 0.2" ๐Ÿ’ง Light watering
Jul 4.8" 5.4" 0" โœ… Rainfall sufficient
Aug 4.8" 3.9" 0.9" ๐Ÿ’ง Light watering
Sep 4.8" 3.7" 1.1" ๐Ÿ’ง Light watering
Oct 4.8" 3.2" 1.6" ๐Ÿ’ง Light watering
Nov โ€” 3.2" 0" โ„๏ธ Dormant
Dec โ€” 3.4" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Rappahannock County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Acorn Squash Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" โ€” every day above 50ยฐF deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Acorn Squash needs ~1,372 GDD — county provides 2,760 GDD Excellent fit

Acorn Squash Planting Timeline โ€” Rappahannock 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

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.1"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

80โ€“100 days

๐Ÿงช Soil pH

Needs 5.5โ€“7 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 6b

๐Ÿ“† Growing Season

181 days in Rappahannock County

Growing Tips for Acorn Squash in Rappahannock County

Direct sow Acorn Squash outdoors after April 21 in Rappahannock County when soil has warmed and frost danger has passed.

Common pests for Acorn Squash in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Acorn Squash in Rappahannock County, VA?

Rappahannock 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 Rappahannock County, VA?

Rappahannock County, Virginia is in USDA Hardiness Zone 6b. The average last spring frost is April 21 and first fall frost is October 19.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Rappahannock County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Rappahannock County, VA. Local conditions may vary. Last updated: April 2026.