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When to plant Melon in Stuart, FL

Melon planted in Stuart between January 25 and February 15 matures in 70–100 days — well before the December 13 first frost.

When to Plant Melon in Stuart, FL

Martin County, Florida Zone 10b August

Martin County, Florida gardeners: here's your August plan

Here's what deserves your attention in Martin County, Florida this month. Everything below is tailored to Zone 10b and timed around your local frost dates.

Avg. last frost January 25
Avg. first frost December 13
Soil temp (4") 96°F
Watering Low
Pest pressure High
Daylight 13 hrs
  1. Plant fall tomatoes & peppers

    Late August is your fall transplant window. Pick heat-tolerant determinate tomatoes (Heatmaster, Solar Fire, Phoenix). They'll set fruit through fall.

  2. Direct-sow brassicas indoors or in shade

    Broccoli, cauliflower, cabbage, Brussels sprouts germinate better in cooler conditions. Start indoors or under shade cloth, transplant in September.

  3. Refresh mulch & drip lines

    Check drip irrigation for clogs (afternoon thunderstorm grit). Top off mulch in all beds before the cool-season crops go in.

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Melons are warm-season vine crops that produce sweet, juicy fruits in many varieties including muskmelon and honeydew. They need a long, hot growing season.

Stuart, Florida is in USDA Zone 10b. The average last spring frost is January 25 and the first fall frost is December 13, giving you a growing season of approximately 322 days.

At an elevation of 80 feet, Martin County receives approximately 56.3 inches of rainfall annually with predominantly sand soil. Summer highs average 88°F, providing good warmth for Melon during the growing season. Sandy soil warms quickly in spring — great for early planting — but Melon will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Melon root diseases.

Stuart, FL (Zone 10b) Year-round
322 days
Last Spring Frost January 25
322 growing days
First Fall Frost December 13

Stuart Soil Profile

Soil Type

Sand

Soil pH

5.1-5.7

Drainage

Well Drained

Melon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (202 days to spare)
Start indoors: Dec 18 Transplant: Jan 22 🍅 Harvest: Apr 2 – May 21
Recommended (50%) ✓ Fits season (196 days to spare)
Start indoors: Dec 28 Transplant: Feb 1 🍅 Harvest: Apr 12 – May 31
Safe Start (90%) ✓ Fits season (183 days to spare)
Start indoors: Jan 20 Transplant: Feb 24 🍅 Harvest: May 5 – Jun 23

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 Stuart

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

Soil pH

Your soil pH (5.1–5.7) is more acidic than Melon prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Melon.

Organic Matter

Organic matter is low (1.5%). Add 2-3 inches of compost before planting Melon.

How to Plant Melon

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

Succession Planting Melon

5
successive plantings in your 322-day season

Sow every 8 weeks. Last sowing by Sep 04 to harvest before frost.

Melon Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,959 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Melon

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

Month Melon Needs Rainfall You Supplement Action
Jan 4.3" 2.8" 1.5" 💧 Light watering
Feb 4.3" 3.1" 1.2" 💧 Light watering
Mar 4.3" 3" 1.3" 💧 Light watering
Apr 4.3" 2.3" 2" 💧 Light watering
May 4.3" 3.4" 0.9" 💧 Light watering
Jun 4.3" 8.6" 0" ✅ Rainfall sufficient
Jul 4.3" 7.9" 0" ✅ Rainfall sufficient
Aug 4.3" 8.4" 0" ✅ Rainfall sufficient
Sep 4.3" 8.2" 0" ✅ Rainfall sufficient
Oct 4.3" 4.2" 0.1" 💧 Light watering
Nov 4.3" 2.2" 2.1" 💧 Light watering
Dec 4.3" 2.1" 2.2" 🚿 Regular watering

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

Melon 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.

Melon needs ~1,360 GDD — county provides 5,168 GDD Excellent fit

Melon Planting Timeline — Stuart, FL

Melon Planting Calendar

Activity When Date Range
Start Indoors December 28 Dec 28 – Jan 11
Transplant Outdoors February 1 Feb 1 – Feb 15
Direct Sow January 25 Jan 25 – Feb 15
Harvest April 12 Apr 12 – May 31

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 10b

📆 Growing Season

322 days in Martin County

Growing Tips for Melon in Stuart

Direct sow Melon outdoors after January 25 in Martin County when soil has warmed and frost danger has passed.

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

Common pests for Melon 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 before transplanting. Plant on raised mounds of compost-enriched soil. Reduce watering as fruits ripen to concentrate sweetness.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Cucumber

Check more plant combinations with our Companion Planting Checker →

When should I plant Melon in Stuart, FL?

In Stuart, FL, plant Melon after the last frost (around January 25) and before the first frost (around December 13). Best results when soil holds above 50°F.

What growing zone is Stuart, FL for Melon?

Stuart sits in USDA Zone 10b. Melon grows reliably in zones 4a through 11b, so it's a good fit here.

Can Melon grow in Stuart's climate?

Yes — Melon grows well in Stuart's temperate climate. Stuart averages a 323-day frost-free season, with last frost around January 25 and first frost around December 13.

🌱

Your Martin County Garden Planner — Free

A 22-page printable planner built for Martin County (Zone 10b). 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 Martin County, FL. Local conditions may vary. Last updated: August 2026.