Blog

When to plant Winter Melon in Newaygo County, MI

In Newaygo County, Winter Melon is a spring-only crop. Plant May 23–June 13 once soil hits 50°F.

When to Plant Winter Melon in Newaygo County, MI

Newaygo County, Michigan Zone 5b June

What to do in June

A quick June briefing for Newaygo County, Michigan gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 16
Avg. first frost October 5
Soil temp (4") 67°F
Watering Low
Pest pressure High
Daylight 15.2 hrs

Instant PDF download. No spam, unsubscribe any time.

Winter melon (wax gourd) is a large Asian squash with a waxy white coating that allows long storage. The mild flesh is used in soups and stir-fries.

Newaygo County, Michigan is in USDA Zone 5b. The average last spring frost is May 16 and the first fall frost is October 5, giving you a growing season of approximately 142 days.

At an elevation of 592 feet, Newaygo County receives approximately 38.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Winter Melon during the growing season.

Newaygo County, MI (Zone 5b) Short season
142 days
Last Spring Frost May 16
142 growing days
First Fall Frost October 5

Newaygo County Soil Profile

Soil Type

Silt Loam

Soil pH

5.8-6.9

Drainage

Well Drained

Winter Melon Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 13 Transplant: May 22 🍅 Harvest: Aug 21 – Oct 9
Recommended (50%) ✗ May not fit
Start indoors: Mar 21 Transplant: May 30 🍅 Harvest: Aug 29 – Oct 17
Safe Start (90%) ✗ May not fit
Start indoors: Apr 3 Transplant: Jun 12 🍅 Harvest: Sep 11 – Oct 30

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 Newaygo County

How your county's soil matches Winter Melon's growing requirements.

Soil pH

Your soil pH (5.8–6.9) overlaps with Winter Melon's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Winter Melon.

Organic Matter

Organic matter is excellent (4.9%) — Winter Melon will thrive.

How to Plant Winter Melon

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

Winter Melon Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 215 gal / 100 sq ft

Monthly Watering Guide for Winter Melon

Winter Melon needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Winter Melon Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3.3" 0" ❄️ Dormant
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 4.3" 0" ✅ Rainfall sufficient
Jul 4.3" 4.9" 0" ✅ Rainfall sufficient
Aug 4.3" 3.8" 0.5" 💧 Light watering
Sep 4.3" 3.2" 1.1" 💧 Light watering
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 2.6" 0" ❄️ Dormant
Dec 2.4" 0" ❄️ Dormant

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

Winter Melon 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.

Winter Melon needs ~1,601 GDD — county provides 2,165 GDD Excellent fit

Winter Melon Planting Timeline — Newaygo County, MI

Winter Melon Planting Calendar

Activity When Date Range
Start Indoors March 21 Mar 21 – Apr 4
Transplant Outdoors May 30 May 30 – Jun 13
Direct Sow May 23 May 23 – Jun 13
Harvest August 29 Aug 29 – Oct 17

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5b

📆 Growing Season

142 days in Newaygo County

Growing Tips for Winter Melon in Newaygo County

Direct sow Winter Melon outdoors after May 16 in Newaygo County when soil has warmed and frost danger has passed.

Common pests for Winter Melon 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. Provide ample space for sprawling vines. Harvest when the waxy coating develops on the rind. Fruits can weigh 15-30 pounds.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Winter Melon in Newaygo County, MI?

Newaygo County is in Zone 5b with an average last frost of May 16. Plan your Winter Melon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Newaygo County, MI?

Newaygo County, Michigan is in USDA Hardiness Zone 5b. The average last spring frost is May 16 and first fall frost is October 5.

When should I plant Winter Melon in Newaygo County, MI?

In Newaygo County, MI, plant Winter Melon after the last frost (around May 16) and before the first frost (around October 5). Best results when soil holds above 50°F.

What growing zone is Newaygo County, MI for Winter Melon?

Newaygo County sits in USDA Zone 5b. Winter Melon grows reliably in zones 5a through 11b, so it's a good fit here.

Can Winter Melon grow in Newaygo County's climate?

Yes — Winter Melon grows well in Newaygo County's temperate climate. Newaygo County averages a 142-day frost-free season, with last frost around May 16 and first frost around October 5.

🌱

Your Newaygo County Garden Planner — Free

A 22-page printable planner built for Newaygo County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

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

Sources & credits

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