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When to Plant Watermelon in Burt County, NE

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.

Burt County, Nebraska is in USDA Zone 5a. The average last spring frost is April 23 and the first fall frost is October 11, giving you a growing season of approximately 171 days.

At an elevation of 501 feet, Burt County receives approximately 27.6 inches of rainfall annually with predominantly loam soil. Summer highs average 86ยฐF, providing good warmth for Watermelon during the growing season.

Burt County, NE (Zone 5a) Moderate season
171 days
Last Spring Frost April 23
171 growing days
First Fall Frost October 11

Burt County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (36 days to spare)
Start indoors: Mar 16 Transplant: May 4 🍅 Harvest: Jul 13 – Aug 31
Recommended (50%) ✓ Fits season (38 days to spare)
Start indoors: Mar 19 Transplant: May 7 🍅 Harvest: Jul 16 – Sep 3
Safe Start (90%) ✓ Fits season (32 days to spare)
Start indoors: Apr 6 Transplant: May 25 🍅 Harvest: Aug 3 – Sep 21

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 Burt County

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

Soil pH

Your soil pH (6.5โ€“7.6) overlaps with Watermelon's range (6.0โ€“7.5), though not a perfect match.

Soil Texture

The loam soil in Burt County is excellent for Watermelon โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help Watermelon.

How to Plant Watermelon

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

Succession Planting Watermelon

2
successive plantings in your 171-day season

Sow every 8 weeks. Last sowing by Jul 03 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.7″/week
You supply
0.8″/week
Watering frequency 2-3 times/week
Season total 1,251 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 โ€” 0.7" 0" โ„๏ธ Dormant
Feb โ€” 1" 0" โ„๏ธ Dormant
Mar โ€” 1.6" 0" โ„๏ธ Dormant
Apr 6.5" 2.9" 3.6" ๐Ÿšฟ Regular watering
May 6.5" 3.7" 2.8" ๐Ÿ’ง Light watering
Jun 6.5" 4" 2.5" ๐Ÿ’ง Light watering
Jul 6.5" 3.8" 2.7" ๐Ÿ’ง Light watering
Aug 6.5" 3.7" 2.8" ๐Ÿ’ง Light watering
Sep 6.5" 2.9" 3.6" ๐Ÿšฟ Regular watering
Oct 6.5" 1.9" 4.6" ๐Ÿšฟ Regular watering
Nov โ€” 0.8" 0" โ„๏ธ Dormant
Dec โ€” 0.7" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Burt County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~1,232 GDD — county provides 2,479 GDD Excellent fit

Watermelon Planting Timeline โ€” Burt County, NE

Watermelon Planting Calendar

Activity When Date Range
Start Indoors March 19 Mar 19 โ€“ Apr 2
Transplant Outdoors May 7 May 7 โ€“ May 21
Direct Sow April 30 Apr 30 โ€“ May 21
Harvest July 16 Jul 16 โ€“ Sep 3

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.5"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

70โ€“100 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 5a

๐Ÿ“† Growing Season

171 days in Burt County

Growing Tips for Watermelon in Burt County

Direct sow Watermelon outdoors after April 23 in Burt County when soil has warmed and frost danger has passed.

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.

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 Burt County, NE?

Burt County is in Zone 5a with an average last frost of April 23. Plan your Watermelon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Burt County, NE?

Burt County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is April 23 and first fall frost is October 11.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Burt County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Burt County, NE. Local conditions may vary. Last updated: April 2026.