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When to Plant Acorn Squash in Columbia County, FL

Columbia County, Florida Zone 9a May

Your May game plan for Columbia County, Florida

Welcome to May in Zone 9a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost March 1
Avg. first frost November 27
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Bring in the acorn squash

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

To set up a strong June, finish these tasks
  • First harvests: acorn squash

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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.

Columbia County, Florida is in USDA Zone 9a. The average last spring frost is March 1 and the first fall frost is November 27, giving you a growing season of approximately 271 days.

At an elevation of 156 feet, Columbia County receives approximately 61 inches of rainfall annually with predominantly sand soil. Summer highs average 96°F, so Acorn Squash may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Acorn Squash will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Acorn Squash root diseases.

Columbia County, FL (Zone 9a) Year-round
271 days
Last Spring Frost March 1
271 growing days
First Fall Frost November 27
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Columbia County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (149 days to spare)
Start indoors: Jan 17 Transplant: Feb 21 🍅 Harvest: May 16 – Jun 20
Recommended (50%) ✓ Fits season (145 days to spare)
Start indoors: Feb 1 Transplant: Mar 8 🍅 Harvest: May 31 – Jul 5
Safe Start (90%) ✓ Fits season (143 days to spare)
Start indoors: Feb 26 Transplant: Apr 2 🍅 Harvest: Jun 25 – Jul 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 Columbia County

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

Soil pH

Your soil pH (4.8–5.7) is more acidic than Acorn Squash prefers (5.5–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Columbia County warms quickly in spring but drains fast. Acorn Squash will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Acorn Squash.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Acorn Squash.

How to Plant Acorn Squash

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

Succession Planting Acorn Squash

3
successive plantings in your 271-day season

Sow every 9.1 weeks. Last sowing by Aug 19 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
1.0″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,403 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 2.5" 0" ❄️ Dormant
Feb 3.4" 0" ❄️ Dormant
Mar 4.8" 3.4" 1.4" 💧 Light watering
Apr 4.8" 2.9" 1.9" 💧 Light watering
May 4.8" 4.3" 0.5" 💧 Light watering
Jun 4.8" 9.3" 0" ✅ Rainfall sufficient
Jul 4.8" 10" 0" ✅ Rainfall sufficient
Aug 4.8" 8" 0" ✅ Rainfall sufficient
Sep 4.8" 7.1" 0" ✅ Rainfall sufficient
Oct 4.8" 4.9" 0" ✅ Rainfall sufficient
Nov 4.8" 2.7" 2.1" 💧 Light watering
Dec 2.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Columbia County). Supplement amounts are based on average rainfall — 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" — 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.

Acorn Squash needs ~1,980 GDD — county provides 5,962 GDD Excellent fit

Acorn Squash Planting Timeline — Columbia County, FL

Acorn Squash Planting Calendar

Activity When Date Range
Start Indoors February 1 Feb 1 – Feb 15
Transplant Outdoors March 8 Mar 8 – Mar 22
Direct Sow March 1 Mar 1 – Mar 22
Harvest May 31 May 31 – Jul 5

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · 1-2 times/week

📅 Days to Maturity

80–100 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

271 days in Columbia County

Growing Tips for Acorn Squash in Columbia County

Direct sow Acorn Squash outdoors after March 01 in Columbia County when soil has warmed and frost danger has passed.

Sandy soil in Columbia County dries quickly — mulch Acorn Squash with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 96°F in Columbia County, provide afternoon shade for Acorn Squash and water deeply in the morning.

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 Columbia County, FL?

Columbia County is in Zone 9a with an average last frost of March 1. Plan your Acorn Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Columbia County, FL?

Columbia County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 1 and first fall frost is November 27.

🌱

Your Columbia County Garden Planner — Free

A 24-page printable planner built for Columbia County (Zone 9a). 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 Columbia County, FL. 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.