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When to Plant Butternut Squash in Osceola 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.

Osceola County, Florida is in USDA Zone 9b. The average last spring frost is January 22 and the first fall frost is December 20, giving you a growing season of approximately 332 days.

At an elevation of 352 feet, Osceola County receives approximately 58.7 inches of rainfall annually with predominantly sand soil. Summer highs average 102ยฐF, so Butternut Squash may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” 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.

Osceola County, FL (Zone 9b) Year-round
332 days
Last Spring Frost January 22
332 growing days
First Fall Frost December 20

Osceola County Soil Profile

Soil Type

Sand

Soil pH

4.9-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (201 days to spare)
Start indoors: Dec 15 Transplant: Jan 19 🍅 Harvest: Apr 20 – May 25
Recommended (50%) ✓ Fits season (199 days to spare)
Start indoors: Dec 25 Transplant: Jan 29 🍅 Harvest: Apr 30 – Jun 4
Safe Start (90%) ✓ Fits season (176 days to spare)
Start indoors: Jan 21 Transplant: Feb 25 🍅 Harvest: May 27 – Jul 1

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 923 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Butternut Squash needs ~2,584 GDD — county provides 8,824 GDD Excellent fit

Butternut Squash Planting Timeline โ€” Osceola County, FL

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors December 25 Dec 25 โ€“ Jan 8
Transplant Outdoors January 29 Jan 29 โ€“ Feb 12
Direct Sow January 22 Jan 22 โ€“ Feb 12
Harvest April 30 Apr 30 โ€“ Jun 4

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

85โ€“110 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 9b

Growing Season

332 days

Growing Tips for Osceola 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

Level Up Your Garden

Frequently Asked Questions

When should I plant Butternut Squash in Osceola County, FL?

Osceola County is in Zone 9b with an average last frost of January 22. Plan your Butternut Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Osceola County, FL?

Osceola County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 22 and first fall frost is December 20.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Osceola 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 Osceola County, FL. Local conditions may vary. Last updated: April 2026.