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When to Plant Squash (Winter) in St. Lucie County, FL

Winter squash includes butternut, acorn, delicata, and hubbard varieties grown to full maturity with hard rinds for storage. They develop sweet, dense flesh.

St. Lucie County, Florida is in USDA Zone 10a. The average last spring frost is January 29 and the first fall frost is December 16, giving you a growing season of approximately 321 days.

At an elevation of 185 feet, St. Lucie County receives approximately 56.2 inches of rainfall annually with predominantly sand soil. Summer highs average 89ยฐF, providing good warmth for Squash (Winter) during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Squash (Winter) will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Squash (Winter) root diseases.

St. Lucie County, FL (Zone 10a) Year-round
321 days
Last Spring Frost January 29
321 growing days
First Fall Frost December 16

St. Lucie County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (177 days to spare)
Start indoors: Dec 22 Transplant: Jan 26 🍅 Harvest: Apr 20 – Jun 15
Recommended (50%) ✓ Fits season (174 days to spare)
Start indoors: Jan 1 Transplant: Feb 5 🍅 Harvest: Apr 30 – Jun 25
Safe Start (90%) ✓ Fits season (161 days to spare)
Start indoors: Jan 21 Transplant: Feb 25 🍅 Harvest: May 20 – Jul 15

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
0.7″/week
Watering frequency 1-2 times/week
Season total 1,950 gal / 100 sq ft
Drought risk

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

Squash (Winter) needs ~1,675 GDD — county provides 5,393 GDD Excellent fit

Squash (Winter) Planting Timeline โ€” St. Lucie County, FL

Squash (Winter) Planting Calendar

Activity When Date Range
Start Indoors January 1 Jan 1 โ€“ Jan 15
Transplant Outdoors February 5 Feb 5 โ€“ Feb 19
Direct Sow January 29 Jan 29 โ€“ Feb 19
Harvest April 30 Apr 30 โ€“ Jun 25

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

Month-by-Month Timeline

MonthActivities
January Start Indoors 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 โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

80โ€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 10a

Growing Season

321 days

Growing Tips for St. Lucie County

Direct sow after last frost on rich mounds. Allow ample space for sprawling vines. Cure harvested fruits in the sun for 10 days before storing in a cool, dry place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Squash (Winter) in St. Lucie County, FL?

St. Lucie County is in Zone 10a with an average last frost of January 29. Plan your Squash (Winter) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is St. Lucie County, FL?

St. Lucie County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is January 29 and first fall frost is December 16.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help St. Lucie County gardeners in Zone 10a 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 St. Lucie County, FL. Local conditions may vary. Last updated: April 2026.