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When to Plant Butternut Squash in Monroe 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.

Monroe County, Florida is in USDA Zone 11a. The average last spring frost is January 22 and the first fall frost is April 15, giving you a growing season of approximately 83 days.

At an elevation of 169 feet, Monroe County receives approximately 55.6 inches of rainfall annually with predominantly sand soil. Summer highs average 93ยฐF, providing good warmth for Butternut Squash during the growing season. 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.

Monroe County, FL (Zone 11a) Very short season
83 days
Last Spring Frost January 22
83 growing days
First Fall Frost April 15

Monroe 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 (138 days to spare)
Start indoors: Dec 20 Transplant: Jan 24 🍅 Harvest: Apr 25 – May 30
Recommended (50%) ✓ Fits season (133 days to spare)
Start indoors: Dec 25 Transplant: Jan 29 🍅 Harvest: Apr 30 – Jun 4
Safe Start (90%) ✓ Fits season (80 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Jun 22 – Jul 27

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 Monroe County

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

Soil pH

Your soil pH (4.8โ€“5.7) is more acidic than Butternut Squash prefers (6.0โ€“7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Butternut Squash.

Organic Matter

Organic matter is low (1.3%). Add 2-3 inches of compost before planting Butternut Squash.

How to Plant Butternut Squash

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

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.6″/week
You supply
0.8″/week
Watering frequency 2-3 times/week
Season total 2,567 gal / 100 sq ft
Butternut Squash needs ~1,926 GDD — county provides 7,208 GDD Excellent fit

Butternut Squash Planting Timeline โ€” Monroe 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

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.1"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

85โ€“110 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 11a

๐Ÿ“† Growing Season

83 days in Monroe County

Growing Tips for Butternut Squash in Monroe County

Direct sow Butternut Squash outdoors after January 22 in Monroe County when soil has warmed and frost danger has passed.

Sandy soil in Monroe County dries quickly โ€” mulch Butternut Squash with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Common pests for Butternut 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

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 Monroe County, FL?

Monroe County is in Zone 11a 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 Monroe County, FL?

Monroe County, Florida is in USDA Hardiness Zone 11a. The average last spring frost is January 22 and first fall frost is .

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Monroe County gardeners in Zone 11a 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 Monroe County, FL. Local conditions may vary. Last updated: April 2026.