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When to Plant Cantaloupe in Duval County, FL

Cantaloupe is a sweet, aromatic melon with salmon-colored flesh and a netted rind. It requires a long, warm growing season and is the quintessential summer fruit.

Duval County, Florida is in USDA Zone 9a. The average last spring frost is February 24 and the first fall frost is November 29, giving you a growing season of approximately 278 days.

At an elevation of 337 feet, Duval County receives approximately 56.9 inches of rainfall annually with predominantly sand soil. Summer highs average 102ยฐF, so Cantaloupe may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Cantaloupe will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cantaloupe root diseases.

Duval County, FL (Zone 9a) Year-round
278 days
Last Spring Frost February 24
278 growing days
First Fall Frost November 29

Duval County Soil Profile

Soil Type

Sand

Soil pH

5-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (164 days to spare)
Transplant: Feb 25 🍅 Harvest: May 6 – Jun 10
Recommended (50%) ✓ Fits season (159 days to spare)
Transplant: Mar 10 🍅 Harvest: May 19 – Jun 23
Safe Start (90%) ✓ Fits season (155 days to spare)
Transplant: Apr 4 🍅 Harvest: Jun 13 – Jul 18

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 356 gal / 100 sq ft
Cantaloupe needs ~2,120 GDD — county provides 7,393 GDD Excellent fit

Cantaloupe Planting Timeline โ€” Duval County, FL

Cantaloupe Planting Calendar

Activity When Date Range
Transplant Outdoors March 10 Mar 10 โ€“ Mar 24
Harvest May 19 May 19 โ€“ Jun 23

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Transplant Outdoors
April โ€”
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

70โ€“90 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 9a

Growing Season

278 days

Growing Tips for Duval County

Start seeds indoors 3-4 weeks early or direct sow on warm mounds. Reduce watering as fruits ripen. Harvest when stem slips easily from the fruit with gentle pressure.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Cantaloupe in Duval County, FL?

Duval County is in Zone 9a with an average last frost of February 24. Plan your Cantaloupe planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Duval County, FL?

Duval County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is February 24 and first fall frost is November 29.

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Plan Your Garden with Confidence

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