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When to Plant Delicata Squash in Jefferson County, AL

Jefferson County, Alabama Zone 8a May

Jefferson County, Alabama gardeners: here's your May plan

Your garden in Jefferson County, Alabama is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 31
Avg. first frost October 31
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs

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Delicata squash is a winter squash with an edible skin and sweet, creamy orange flesh. Its compact vines make it suitable for smaller gardens.

Jefferson County, Alabama is in USDA Zone 8a. The average last spring frost is March 31 and the first fall frost is October 31, giving you a growing season of approximately 214 days.

At an elevation of 408 feet, Jefferson County receives approximately 48 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°F, providing good warmth for Delicata Squash during the growing season. Clay soil retains moisture well for Delicata Squash, but amend with compost to improve drainage and prevent root rot.

Jefferson County, AL (Zone 8a) Long season
214 days
Last Spring Frost March 31
214 growing days
First Fall Frost October 31

Jefferson County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (80 days to spare)
Start indoors: Feb 26 Transplant: Apr 9 🍅 Harvest: Jul 2 – Aug 6
Recommended (50%) ✓ Fits season (81 days to spare)
Start indoors: Mar 3 Transplant: Apr 14 🍅 Harvest: Jul 7 – Aug 11
Safe Start (90%) ✓ Fits season (80 days to spare)
Start indoors: Mar 22 Transplant: May 3 🍅 Harvest: Jul 26 – Aug 30

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 Jefferson County

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

Soil pH

Your soil pH (5.7–6.8) overlaps with Delicata Squash's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Delicata Squash.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Delicata Squash.

How to Plant Delicata Squash

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

Succession Planting Delicata Squash

3
successive plantings in your 214-day season

Sow every 9.1 weeks. Last sowing by Jul 23 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Delicata Squash

Delicata Squash needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Delicata Squash Needs Rainfall You Supplement Action
Jan 4.3" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 4.3" 4.9" 0" ✅ Rainfall sufficient
Apr 4.3" 3.9" 0.4" 💧 Light watering
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 4.2" 0.1" 💧 Light watering
Jul 4.3" 4.2" 0.1" 💧 Light watering
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 3.2" 1.1" 💧 Light watering
Oct 4.3" 3.3" 1" 💧 Light watering
Nov 3.3" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

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

Delicata 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.

Delicata Squash needs ~1,845 GDD — county provides 4,387 GDD Excellent fit

Delicata Squash Planting Timeline — Jefferson County, AL

Delicata Squash Planting Calendar

Activity When Date Range
Start Indoors March 3 Mar 3 – Mar 17
Transplant Outdoors April 14 Apr 14 – Apr 28
Direct Sow April 7 Apr 7 – Apr 28
Harvest July 7 Jul 7 – Aug 11

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
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"/week · Natural rainfall sufficient

📅 Days to Maturity

80–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

214 days in Jefferson County

Growing Tips for Delicata Squash in Jefferson County

Direct sow Delicata Squash outdoors after March 31 in Jefferson County when soil has warmed and frost danger has passed.

With Jefferson County's clay soil (34% clay), work in 3-4 inches of compost before planting Delicata Squash. Avoid tilling when soil is wet to prevent compaction.

Common pests for Delicata 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 on mounds. Harvest when skin is hard and ivory with green stripes. The thin skin does not need peeling. Stores 2-3 months in a cool place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Delicata Squash in Jefferson County, AL?

Jefferson County is in Zone 8a with an average last frost of March 31. Plan your Delicata Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jefferson County, AL?

Jefferson County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is March 31 and first fall frost is October 31.

🌱

Your Jefferson County Garden Planner — Free

A 24-page printable planner built for Jefferson County (Zone 8a). 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 Jefferson 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.