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When to Plant Cantaloupe in Shelby County, TN

Shelby County, Tennessee Zone 8a May

May to-do list for Shelby County, Tennessee

Your Shelby County, Tennessee garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost March 21
Avg. first frost November 5
Soil temp (4") 60°F
Watering Moderate
Pest pressure Moderate
Daylight 13.8 hrs
A few tasks this May that'll pay off in June
  • 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.

Shelby County, Tennessee is in USDA Zone 8a. The average last spring frost is March 21 and the first fall frost is November 5, giving you a growing season of approximately 229 days.

At an elevation of 3,465 feet, Shelby County receives approximately 45.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Cantaloupe during the growing season.

Shelby County, TN (Zone 8a) Long season
229 days
Last Spring Frost March 21
229 growing days
First Fall Frost November 5
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Shelby County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (106 days to spare)
Transplant: Apr 4 🍅 Harvest: Jun 13 – Jul 18
Recommended (50%) ✓ Fits season (103 days to spare)
Transplant: Apr 11 🍅 Harvest: Jun 20 – Jul 25
Safe Start (90%) ✓ Fits season (103 days to spare)
Transplant: May 1 🍅 Harvest: Jul 10 – Aug 14

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 Shelby County

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

Soil pH

Your soil pH (5.3–7.0) overlaps with Cantaloupe's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.1%). 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 229-day season

Sow every 8 weeks. Last sowing by Aug 07 to harvest before frost.

Plant Water Budget

Plant needs
1.3″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 941 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 3.3" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 5.6" 4.2" 1.4" 💧 Light watering
Apr 5.6" 2.9" 2.7" 💧 Light watering
May 5.6" 3.6" 2" 💧 Light watering
Jun 5.6" 4.6" 1" 💧 Light watering
Jul 5.6" 5.1" 0.5" 💧 Light watering
Aug 5.6" 4.7" 0.9" 💧 Light watering
Sep 5.6" 3" 2.6" 💧 Light watering
Oct 5.6" 3.3" 2.3" 💧 Light watering
Nov 5.6" 3.5" 2.1" 💧 Light watering
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Shelby 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 ~1,340 GDD — county provides 3,835 GDD Excellent fit

Cantaloupe Planting Timeline — Shelby County, TN

Cantaloupe Planting Calendar

Activity When Date Range
Transplant Outdoors April 11 Apr 11 – Apr 25
Harvest June 20 Jun 20 – Jul 25

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 8a

📆 Growing Season

229 days in Shelby County

Growing Tips for Cantaloupe in Shelby County

Direct sow Cantaloupe outdoors after March 21 in Shelby 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 Shelby County, TN?

Shelby County is in Zone 8a with an average last frost of March 21. Plan your Cantaloupe planting based on this frost date — see the calendar above for exact timing.

What planting zone is Shelby County, TN?

Shelby County, Tennessee is in USDA Hardiness Zone 8a. The average last spring frost is March 21 and first fall frost is November 5.

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Your Shelby County Garden Planner — Free

A 24-page printable planner built for Shelby County (Zone 8a). 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 Shelby County, TN. 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.