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When to plant Zucchini in Jackson County, FL

Plant Zucchini in Jackson County, when soil hits 50°F — usually March 6. Continue planting through March 27 for the spring crop.

When to Plant Zucchini in Jackson County, FL

Zucchini
Jackson County, Florida Zone 9a July

What to do in July

We've pulled the most time-sensitive tasks for Jackson County, Florida this July and put them front and centre. Tackle them in order.

Avg. last frost March 6
Avg. first frost November 19
Soil temp (4") 91°F
Watering Low
Pest pressure High
Daylight 13.8 hrs

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Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

Jackson County, Florida is in USDA Zone 9a. The average last spring frost is March 6 and the first fall frost is November 19, giving you a growing season of approximately 258 days.

At an elevation of 223 feet, Jackson County receives approximately 48.5 inches of rainfall annually with predominantly sand soil. Summer highs average 92°F, providing good warmth for Zucchini during the growing season. Sandy soil warms quickly in spring — great for early planting — but Zucchini will need more frequent watering and organic matter to retain nutrients.

Jackson County, FL (Zone 9a) Long season
258 days
Last Spring Frost March 6
258 growing days
First Fall Frost November 19

Jackson County Soil Profile

Soil Type

Sand

Soil pH

5.1-6

Drainage

Well Drained

Zucchini Planting Risk Windows

Early Start (70% safe) ✓ Fits season (145 days to spare)
Start indoors: Jan 31 Transplant: Mar 7 🍅 Harvest: Apr 25 – Jun 20
Recommended (50%) ✓ Fits season (146 days to spare)
Start indoors: Feb 6 Transplant: Mar 13 🍅 Harvest: May 1 – Jun 26
Safe Start (90%) ✓ Fits season (151 days to spare)
Start indoors: Feb 27 Transplant: Apr 3 🍅 Harvest: May 22 – Jul 17

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 Jackson County

How your county's soil matches Zucchini's growing requirements.

Soil pH

Your soil pH (5.1–6.0) is more acidic than Zucchini prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Zucchini.

Organic Matter

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

How to Plant Zucchini

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

Succession Planting Zucchini

6
successive plantings in your 258-day season

Sow every 5.1 weeks. Last sowing by Sep 20 to harvest before frost.

Zucchini Water Budget

Plant needs
1.2″/week
Rainfall provides
0.8″/week
You supply
0.9″/week
Watering frequency 2-3 times/week
Season total 2,123 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Zucchini

Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Zucchini Needs Rainfall You Supplement Action
Jan 2.3" 0" ❄️ Dormant
Feb 2.6" 0" ❄️ Dormant
Mar 5.2" 2.7" 2.5" 💧 Light watering
Apr 5.2" 1.9" 3.3" 🚿 Regular watering
May 5.2" 3.2" 2" 💧 Light watering
Jun 5.2" 7" 0" ✅ Rainfall sufficient
Jul 5.2" 7.2" 0" ✅ Rainfall sufficient
Aug 5.2" 7.5" 0" ✅ Rainfall sufficient
Sep 5.2" 6.1" 0" ✅ Rainfall sufficient
Oct 5.2" 4" 1.2" 💧 Light watering
Nov 5.2" 1.9" 3.3" 🚿 Regular watering
Dec 2.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Jackson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Zucchini 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" — every day above 50°F 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.

Zucchini needs ~998 GDD — county provides 4,902 GDD Excellent fit

Zucchini Planting Timeline — Jackson County, FL

Zucchini Planting Calendar

Activity When Date Range
Start Indoors February 6 Feb 6 – Feb 20
Transplant Outdoors March 13 Mar 13 – Mar 27
Direct Sow March 6 Mar 6 – Mar 27
Harvest May 1 May 1 – Jun 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · 2-3 times/week

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

258 days in Jackson County

Growing Tips for Zucchini in Jackson County

Direct sow Zucchini outdoors after March 06 in Jackson County when soil has warmed and frost danger has passed.

Sandy soil in Jackson County dries quickly — mulch Zucchini with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Your generous 258.0-day season in Jackson County allows multiple plantings of Zucchini. Sow every 22.0 days for continuous harvest.

Common pests for Zucchini 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. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zucchini in Jackson County, FL?

Jackson County is in Zone 9a with an average last frost of March 6. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Jackson County, FL?

Jackson County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 6 and first fall frost is November 19.

When should I plant Zucchini in Jackson County, FL?

In Jackson County, FL, plant Zucchini after the last frost (around March 6) and before the first frost (around November 19). Best results when soil holds above 50°F.

What growing zone is Jackson County, FL for Zucchini?

Jackson County sits in USDA Zone 9a. Zucchini grows reliably in zones 3a through 11b, so it's a good fit here.

Can Zucchini grow in Jackson County's climate?

Yes — Zucchini grows well in Jackson County's temperate climate. Jackson County averages a 258-day frost-free season, with last frost around March 6 and first frost around November 19.

🌱

Your Jackson County Garden Planner — Free

A 22-page printable planner built for Jackson County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Jackson County, FL. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.