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When to Plant Butternut Squash in Pinellas County, FL

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.

Pinellas County, Florida is in USDA Zone 9b. The average last spring frost is January 25 and the first fall frost is December 16, giving you a growing season of approximately 325 days.

At an elevation of 246 feet, Pinellas County receives approximately 58.1 inches of rainfall annually with predominantly sand soil. Summer highs average 102Β°F, so Butternut Squash may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring β€” great for early planting β€” but Butternut Squash will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Butternut Squash root diseases.

Pinellas County, FL (Zone 9b) Year-round
325 days
Last Spring Frost January 25
325 growing days
First Fall Frost December 16

Pinellas County Soil Profile

Soil Type

Sand

Soil pH

5.1-6.2

Drainage

Well Drained

Monthly Watering Guide for Butternut Squash

Butternut 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 Butternut Squash Needs Rainfall You Supplement Action
Jan 4.3" 2.9" 1.4" πŸ’§ Light watering
Feb 4.3" 3.2" 1.1" πŸ’§ Light watering
Mar 4.3" 3.7" 0.6" πŸ’§ Light watering
Apr 4.3" 2.4" 1.9" πŸ’§ Light watering
May 4.3" 3.6" 0.7" πŸ’§ Light watering
Jun 4.3" 7.6" 0" βœ… Rainfall sufficient
Jul 4.3" 8.5" 0" βœ… Rainfall sufficient
Aug 4.3" 8.7" 0" βœ… Rainfall sufficient
Sep 4.3" 7.1" 0" βœ… Rainfall sufficient
Oct 4.3" 5.3" 0" βœ… Rainfall sufficient
Nov 4.3" 2.5" 1.8" πŸ’§ Light watering
Dec 4.3" 2.6" 1.7" πŸ’§ Light watering

Water needs are for active growing months only (Jan–Dec in Pinellas County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Butternut Squash Planting Timeline β€” Pinellas County, FL

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors December 28 Dec 28 – Jan 11
Transplant Outdoors February 1 Feb 1 – Feb 15
Direct Sow January 25 Jan 25 – Feb 15
Harvest May 3 May 3 – Jun 7

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

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

85–110 days

πŸ§ͺ Soil pH

Needs 6–7 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 9b

πŸ“† Growing Season

325 days in Pinellas County

Growing Tips for Pinellas County

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 Pinellas County, FL?

Pinellas County is in Zone 9b with an average last frost of January 25. Plan your Butternut Squash planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Pinellas County, FL?

Pinellas County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 25 and first fall frost is December 16.

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Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Pinellas County gardeners in Zone 9b 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 Pinellas County, FL. Local conditions may vary. Last updated: April 2026.