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When to Plant Cantaloupe in Suffolk County, NY

Suffolk County, New York Zone 7b April

This month in Suffolk County, New York

Welcome to April in Zone 7b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 15
Avg. first frost October 31
Soil temp (4") 56°F
Watering Moderate
Pest pressure Moderate
Daylight 13.1 hrs
May will be here before you know it — start on
  • Transplants going out: 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.

Suffolk County, New York is in USDA Zone 7a. The average last spring frost is April 15 and the first fall frost is October 31, giving you a growing season of approximately 199 days.

At an elevation of 1,187 feet, Suffolk County receives approximately 41 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Cantaloupe during the growing season.

Suffolk County, NY (Zone 7a) Moderate season
199 days
Last Spring Frost April 15
199 growing days
First Fall Frost October 31

Suffolk County Soil Profile

Soil Type

Silt Loam

Soil pH

4.9-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (70 days to spare)
Transplant: Apr 30 🍅 Harvest: Jul 9 – Aug 13
Recommended (50%) ✓ Fits season (73 days to spare)
Transplant: May 6 🍅 Harvest: Jul 15 – Aug 19
Safe Start (90%) ✓ Fits season (66 days to spare)
Transplant: May 26 🍅 Harvest: Aug 4 – Sep 8

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 Suffolk County

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

Soil pH

Your soil pH (4.9–6.7) is more acidic than Cantaloupe prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Suffolk County is excellent for Cantaloupe — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Cantaloupe.

How to Plant Cantaloupe

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

Succession Planting Cantaloupe

3
successive plantings in your 199-day season

Sow every 8 weeks. Last sowing by Aug 02 to harvest before frost.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
0.9″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 770 gal / 100 sq ft

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 2.7" 0" ❄️ Dormant
Feb 2.9" 0" ❄️ Dormant
Mar 3.4" 0" ❄️ Dormant
Apr 5.6" 3.4" 2.2" 💧 Light watering
May 5.6" 4.1" 1.5" 💧 Light watering
Jun 5.6" 3.7" 1.9" 💧 Light watering
Jul 5.6" 4.6" 1" 💧 Light watering
Aug 5.6" 3.3" 2.3" 💧 Light watering
Sep 5.6" 3.9" 1.7" 💧 Light watering
Oct 5.6" 2.9" 2.7" 💧 Light watering
Nov 2.9" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Suffolk 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 ~1,400 GDD — county provides 3,482 GDD Excellent fit

Cantaloupe Planting Timeline — Suffolk County, NY

Cantaloupe Planting Calendar

Activity When Date Range
Transplant Outdoors May 6 May 6 – May 20
Harvest July 15 Jul 15 – Aug 19

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.3"/week · 1-2 times/week

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7a

📆 Growing Season

199 days in Suffolk County

Growing Tips for Cantaloupe in Suffolk County

Direct sow Cantaloupe outdoors after April 15 in Suffolk County when soil has warmed and frost danger has passed.

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 Suffolk County, NY?

Suffolk County is in Zone 7a with an average last frost of April 15. Plan your Cantaloupe planting based on this frost date — see the calendar above for exact timing.

What planting zone is Suffolk County, NY?

Suffolk County, New York is in USDA Hardiness Zone 7a. The average last spring frost is April 15 and first fall frost is October 31.

🌱

Your Suffolk County Garden Planner — Free

A 24-page printable planner built for Suffolk County (Zone 7a). 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 Suffolk County, NY. Local conditions may vary. Last updated: April 2026.

Sources & credits

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