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When to Plant Cantaloupe in Santa Rosa County, FL

Santa Rosa County, Florida Zone 9a May

This month in Santa Rosa County, Florida

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 6
Avg. first frost November 21
Soil temp (4") 71°F
Watering Moderate
Pest pressure High
Daylight 13.6 hrs
  1. Basket week: cantaloupe

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Before June arrives, get these ready
  • First harvests: cantaloupe

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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.

Santa Rosa County, Florida is in USDA Zone 9a. The average last spring frost is March 6 and the first fall frost is November 21, giving you a growing season of approximately 260 days.

At an elevation of 104 feet, Santa Rosa County receives approximately 55 inches of rainfall annually with predominantly sand soil. Summer highs average 91°F, providing good warmth for Cantaloupe during the growing season. Sandy soil warms quickly in spring — great for early planting — 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.

Santa Rosa County, FL (Zone 9a) Long season
260 days
Last Spring Frost March 6
260 growing days
First Fall Frost November 21

Santa Rosa County Soil Profile

Soil Type

Sand

Soil pH

5.1-5.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (140 days to spare)
Transplant: Mar 15 🍅 Harvest: May 24 – Jun 28
Recommended (50%) ✓ Fits season (141 days to spare)
Transplant: Mar 20 🍅 Harvest: May 29 – Jul 3
Safe Start (90%) ✓ Fits season (141 days to spare)
Transplant: Apr 10 🍅 Harvest: Jun 19 – Jul 24

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 Santa Rosa County

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

Soil pH

Your soil pH (5.1–5.8) is more acidic than Cantaloupe prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Cantaloupe.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Cantaloupe.

How to Plant Cantaloupe

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

Succession Planting Cantaloupe

4
successive plantings in your 260-day season

Sow every 8 weeks. Last sowing by Aug 23 to harvest before frost.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
0.9″/week
You supply
1.0″/week
Watering frequency 2-3 times/week
Season total 2,226 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Cantaloupe

Cantaloupe needs approximately 1.3 inches of water per week (5.6" per month). Here's how your county's rainfall compares month by month.

Month Cantaloupe Needs Rainfall You Supplement Action
Jan 2.9" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 5.6" 3.1" 2.5" 💧 Light watering
Apr 5.6" 2.3" 3.3" 🚿 Regular watering
May 5.6" 3.2" 2.4" 💧 Light watering
Jun 5.6" 7.5" 0" ✅ Rainfall sufficient
Jul 5.6" 7.9" 0" ✅ Rainfall sufficient
Aug 5.6" 8.6" 0" ✅ Rainfall sufficient
Sep 5.6" 7.9" 0" ✅ Rainfall sufficient
Oct 5.6" 4.4" 1.2" 💧 Light watering
Nov 5.6" 2" 3.6" 🚿 Regular watering
Dec 2.3" 0" ❄️ Dormant

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

Cantaloupe 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.

Cantaloupe needs ~1,460 GDD — county provides 4,745 GDD Excellent fit

Cantaloupe Planting Timeline — Santa Rosa County, FL

Cantaloupe Planting Calendar

Activity When Date Range
Transplant Outdoors March 20 Mar 20 – Apr 3
Harvest May 29 May 29 – Jul 3

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · 2-3 times/week

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

260 days in Santa Rosa County

Growing Tips for Cantaloupe in Santa Rosa County

Direct sow Cantaloupe outdoors after March 06 in Santa Rosa County when soil has warmed and frost danger has passed.

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

Common pests for Cantaloupe 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 3-4 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cantaloupe in Santa Rosa County, FL?

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

What planting zone is Santa Rosa County, FL?

Santa Rosa County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 6 and first fall frost is November 21.

🌱

Your Santa Rosa County Garden Planner — Free

A 24-page printable planner built for Santa Rosa 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 Santa Rosa County, FL. Local conditions may vary. Last updated: May 2026.

Sources & credits

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