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When to Plant Butternut Squash in Sumter County, AL

Sumter County, Alabama Zone 8b May

What to do in May

Your Sumter County, Alabama garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost March 21
Avg. first frost November 8
Soil temp (4") 69°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs

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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.

Sumter County, Alabama is in USDA Zone 8b. The average last spring frost is March 21 and the first fall frost is November 8, giving you a growing season of approximately 232 days.

At an elevation of 335 feet, Sumter County receives approximately 56.6 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°F, providing good warmth for Butternut Squash during the growing season. Clay soil retains moisture well for Butternut Squash, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Butternut Squash root diseases.

Sumter County, AL (Zone 8b) Long season
232 days
Last Spring Frost March 21
232 growing days
First Fall Frost November 8

Sumter County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (96 days to spare)
Start indoors: Feb 10 Transplant: Mar 24 🍅 Harvest: Jun 23 – Jul 28
Recommended (50%) ✓ Fits season (92 days to spare)
Start indoors: Feb 21 Transplant: Apr 4 🍅 Harvest: Jul 4 – Aug 8
Safe Start (90%) ✓ Fits season (91 days to spare)
Start indoors: Mar 12 Transplant: Apr 23 🍅 Harvest: Jul 23 – Aug 27

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 Sumter County

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

Soil pH

Your soil pH (5.6–6.2) is more acidic than Butternut Squash prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Sumter County is excellent for Butternut Squash — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.9%). Annual compost additions will help Butternut Squash.

How to Plant Butternut Squash

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

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 156 gal / 100 sq ft

Monthly Watering Guide for Butternut Squash

Butternut 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 Butternut Squash Needs Rainfall You Supplement Action
Jan 5" 0" ❄️ Dormant
Feb 5" 0" ❄️ Dormant
Mar 4.8" 5.2" 0" ✅ Rainfall sufficient
Apr 4.8" 4.7" 0.1" 💧 Light watering
May 4.8" 4.6" 0.2" 💧 Light watering
Jun 4.8" 4.9" 0" ✅ Rainfall sufficient
Jul 4.8" 5.2" 0" ✅ Rainfall sufficient
Aug 4.8" 5.9" 0" ✅ Rainfall sufficient
Sep 4.8" 4" 0.8" 💧 Light watering
Oct 4.8" 3.7" 1.1" 💧 Light watering
Nov 4.8" 4" 0.8" 💧 Light watering
Dec 4.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Sumter County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Butternut 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" — every day above 50°F 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.

Butternut Squash needs ~1,999 GDD — county provides 4,756 GDD Excellent fit

Butternut Squash Planting Timeline — Sumter County, AL

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors February 21 Feb 21 – Mar 7
Transplant Outdoors April 4 Apr 4 – Apr 18
Direct Sow March 28 Mar 28 – Apr 18
Harvest July 4 Jul 4 – Aug 8

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

85–110 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

232 days in Sumter County

Growing Tips for Butternut Squash in Sumter County

Direct sow Butternut Squash outdoors after March 21 in Sumter County when soil has warmed and frost danger has passed.

With Sumter County's clay soil (32% clay), work in 3-4 inches of compost before planting Butternut Squash. Avoid tilling when soil is wet to prevent compaction.

Common pests for Butternut 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

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Butternut Squash in Sumter County, AL?

Sumter County is in Zone 8b with an average last frost of March 21. Plan your Butternut Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sumter County, AL?

Sumter County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 21 and first fall frost is November 8.

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Your Sumter County Garden Planner — Free

A 24-page printable planner built for Sumter County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Sumter County, AL. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.