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When to Plant Watermelon in Sharkey County, MS

Sharkey County, Mississippi Zone 8b May

Your May planting checklist for Sharkey County, Mississippi

Here's what deserves your attention in Sharkey County, Mississippi this month. Everything below is tailored to Zone 8b and timed around your local frost dates.

Avg. last frost March 5
Avg. first frost November 18
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Start harvesting watermelon

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

June prep starts now
  • First harvests: watermelon

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Watermelon is a sprawling vine crop that produces sweet, juicy fruits in hot weather. Varieties range from personal-sized icebox types to 50-pound giants.

Sharkey County, Mississippi is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 18, giving you a growing season of approximately 258 days.

At an elevation of 460 feet, Sharkey County receives approximately 55.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Watermelon during the growing season. Clay soil retains moisture well for Watermelon, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Watermelon root diseases.

Sharkey County, MS (Zone 8b) Long season
258 days
Last Spring Frost March 5
258 growing days
First Fall Frost November 18

Sharkey County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (128 days to spare)
Start indoors: Jan 29 Transplant: Mar 12 🍅 Harvest: May 21 – Jul 9
Recommended (50%) ✓ Fits season (125 days to spare)
Start indoors: Feb 5 Transplant: Mar 19 🍅 Harvest: May 28 – Jul 16
Safe Start (90%) ✓ Fits season (121 days to spare)
Start indoors: Feb 22 Transplant: Apr 5 🍅 Harvest: Jun 14 – Aug 2

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 Sharkey County

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

Soil pH

Your soil pH (5.5–6.8) overlaps with Watermelon's range (6.0–7.5), though not a perfect match.

Soil Texture

The clay loam soil in Sharkey County is excellent for Watermelon — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Watermelon.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Watermelon.

How to Plant Watermelon

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

Succession Planting Watermelon

4
successive plantings in your 258-day season

Sow every 8 weeks. Last sowing by Aug 10 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 336 gal / 100 sq ft

Monthly Watering Guide for Watermelon

Watermelon needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Watermelon Needs Rainfall You Supplement Action
Jan 4.8" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 6.5" 5.5" 1" 💧 Light watering
Apr 6.5" 4.6" 1.9" 💧 Light watering
May 6.5" 3.9" 2.6" 💧 Light watering
Jun 6.5" 4.6" 1.9" 💧 Light watering
Jul 6.5" 6.4" 0.1" 💧 Light watering
Aug 6.5" 4.9" 1.6" 💧 Light watering
Sep 6.5" 4.7" 1.8" 💧 Light watering
Oct 6.5" 3.4" 3.1" 💧 Light watering
Nov 6.5" 3.7" 2.8" 💧 Light watering
Dec 4.7" 0" ❄️ Dormant

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

Watermelon 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.

Watermelon needs ~1,551 GDD — county provides 4,708 GDD Excellent fit

Watermelon Planting Timeline — Sharkey County, MS

Watermelon Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 – Feb 19
Transplant Outdoors March 19 Mar 19 – Apr 2
Direct Sow March 12 Mar 12 – Apr 2
Harvest May 28 May 28 – Jul 16

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Only during dry spells

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

258 days in Sharkey County

Growing Tips for Watermelon in Sharkey County

Direct sow Watermelon outdoors after March 05 in Sharkey County when soil has warmed and frost danger has passed.

With Sharkey County's clay soil (29% clay), work in 3-4 inches of compost before planting Watermelon. Avoid tilling when soil is wet to prevent compaction.

Common pests for Watermelon 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 after soil is warm. Plant on mounds with plenty of space. Check ripeness by looking for a yellow ground spot and dull thump when tapped.

Recommended Watermelon Varieties for Sharkey County

Full-size melons that thrive with your long season

Crimson Sweet (85d) Charleston Gray (85d) Moon and Stars (95d)

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Watermelon in Sharkey County, MS?

Sharkey County is in Zone 8b with an average last frost of March 5. Plan your Watermelon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sharkey County, MS?

Sharkey County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 18.

🌱

Your Sharkey County Garden Planner — Free

A 24-page printable planner built for Sharkey County (Zone 8b). 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 Sharkey County, MS. 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.