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When to Plant Squash (Summer) in Marion County, FL

Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.

Marion County, Florida is in USDA Zone 9a. The average last spring frost is February 15 and the first fall frost is December 1, giving you a growing season of approximately 289 days.

At an elevation of 244 feet, Marion County receives approximately 54.1 inches of rainfall annually with predominantly sand soil. Summer highs average 97ยฐF, so Squash (Summer) may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Squash (Summer) will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Squash (Summer) root diseases.

Marion County, FL (Zone 9a) Year-round
289 days
Last Spring Frost February 15
289 growing days
First Fall Frost December 1

Marion County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (171 days to spare)
Start indoors: Jan 9 Transplant: Feb 13 🍅 Harvest: Apr 3 – Jun 5
Recommended (50%) ✓ Fits season (170 days to spare)
Start indoors: Jan 18 Transplant: Feb 22 🍅 Harvest: Apr 12 – Jun 14
Safe Start (90%) ✓ Fits season (162 days to spare)
Start indoors: Feb 15 Transplant: Mar 22 🍅 Harvest: May 10 – Jul 12

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 Marion County

How your county's soil matches Squash (Summer)'s growing requirements.

Soil pH

Your soil pH (4.8โ€“5.9) is more acidic than Squash (Summer) prefers (6.0โ€“7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Squash (Summer).

Organic Matter

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

How to Plant Squash (Summer)

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

Succession Planting Squash (Summer)

7
successive plantings in your 289-day season

Sow every 5.1 weeks. Last sowing by Sep 27 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,333 gal / 100 sq ft

Monthly Watering Guide for Squash (Summer)

Squash (Summer) needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Squash (Summer) Needs Rainfall You Supplement Action
Jan โ€” 2.2" 0" โ„๏ธ Dormant
Feb 4.3" 2.7" 1.6" ๐Ÿ’ง Light watering
Mar 4.3" 3.5" 0.8" ๐Ÿ’ง Light watering
Apr 4.3" 2.2" 2.1" ๐Ÿ’ง Light watering
May 4.3" 3.6" 0.7" ๐Ÿ’ง Light watering
Jun 4.3" 7.2" 0" โœ… Rainfall sufficient
Jul 4.3" 8.6" 0" โœ… Rainfall sufficient
Aug 4.3" 8.6" 0" โœ… Rainfall sufficient
Sep 4.3" 7.4" 0" โœ… Rainfall sufficient
Oct 4.3" 3.9" 0.4" ๐Ÿ’ง Light watering
Nov 4.3" 2.2" 2.1" ๐Ÿ’ง Light watering
Dec 4.3" 2.1" 2.2" ๐Ÿšฟ Regular watering

Water needs are for active growing months only (Febโ€“Dec in Marion County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Squash (Summer) 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" โ€” every day above 50ยฐF 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.

Squash (Summer) needs ~1,251 GDD — county provides 6,597 GDD Excellent fit

Squash (Summer) Planting Timeline โ€” Marion County, FL

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors January 18 Jan 18 โ€“ Feb 1
Transplant Outdoors February 22 Feb 22 โ€“ Mar 8
Direct Sow February 15 Feb 15 โ€“ Mar 8
Harvest April 12 Apr 12 โ€“ Jun 14

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

45โ€“65 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: too_acidic

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

289 days in Marion County

Growing Tips for Squash (Summer) in Marion County

Direct sow Squash (Summer) outdoors after February 15 in Marion County when soil has warmed and frost danger has passed.

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

With summer highs reaching 97ยฐF in Marion County, provide afternoon shade for Squash (Summer) and water deeply in the morning.

Your generous 290.0-day season in Marion County allows multiple plantings of Squash (Summer). Sow every 22.0 days for continuous harvest.

Common pests for Squash (Summer) 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 on mounds. Harvest frequently when fruits are 6-8 inches for best texture. Check plants daily as they grow rapidly in summer heat.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Squash (Summer) in Marion County, FL?

Marion County is in Zone 9a with an average last frost of February 15. Plan your Squash (Summer) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Marion County, FL?

Marion County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is February 15 and first fall frost is December 1.

๐ŸŒฑ

Plan Your Garden with Confidence

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