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When to Plant Honeydew in Waukesha County, WI

Honeydew melons have smooth, pale green rinds and sweet, light green flesh. They require a long, warm growing season and are slightly more heat-tolerant than cantaloupe.

Waukesha County, Wisconsin is in USDA Zone 5a. The average last spring frost is April 27 and the first fall frost is October 12, giving you a growing season of approximately 168 days.

At an elevation of 1,352 feet, Waukesha County receives approximately 37.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83ยฐF, so choose short-season varieties of Honeydew to ensure they mature before fall.

Waukesha County, WI (Zone 5a) Moderate season
168 days
Last Spring Frost April 27
168 growing days
First Fall Frost October 12

Waukesha County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (20 days to spare)
Transplant: May 14 🍅 Harvest: Aug 6 – Sep 17
Recommended (50%) ✓ Fits season (21 days to spare)
Transplant: May 18 🍅 Harvest: Aug 10 – Sep 21
Safe Start (90%) ✓ Fits season (19 days to spare)
Transplant: Jun 3 🍅 Harvest: Aug 26 – Oct 7

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 549 gal / 100 sq ft
Honeydew needs ~1,164 GDD — county provides 2,058 GDD Excellent fit

Honeydew Planting Timeline โ€” Waukesha County, WI

Honeydew Planting Calendar

Activity When Date Range
Transplant Outdoors May 18 May 18 โ€“ Jun 1
Harvest August 10 Aug 10 โ€“ Sep 21

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

80โ€“110 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 5a

Growing Season

168 days

Growing Tips for Waukesha County

Start seeds indoors 4 weeks before transplanting. Plant on raised mounds of rich soil. Harvest when the blossom end gives slightly when pressed and the skin turns creamy yellow.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Honeydew in Waukesha County, WI?

Waukesha County is in Zone 5a with an average last frost of April 27. Plan your Honeydew planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Waukesha County, WI?

Waukesha County, Wisconsin is in USDA Hardiness Zone 5a. The average last spring frost is April 27 and first fall frost is October 12.

๐ŸŒฑ

Plan Your Garden with Confidence

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

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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 Waukesha County, WI. Local conditions may vary. Last updated: April 2026.