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When to Plant Hubbard Squash in Lake County, OH

Lake County, Ohio Zone 7a May

Top priorities for Lake County, Ohio gardeners in May

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

Avg. last frost May 5
Avg. first frost October 13
Soil temp (4") 62°F
Watering Low
Pest pressure Low
Daylight 14.4 hrs
  1. Get hubbard squash in the ground

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

  2. Outdoor sowing time: hubbard squash

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

Coming up in June — start thinking about
  • Starting indoors: hubbard squash

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Hubbard squash is a large, bumpy-skinned winter squash with dense, sweet, dry flesh ideal for baking and pies. The hard shell allows storage for 6 months or more.

Lake County, Ohio is in USDA Zone 7a. The average last spring frost is May 5 and the first fall frost is October 13, giving you a growing season of approximately 161 days.

At an elevation of 740 feet, Lake County receives approximately 35.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Hubbard Squash during the growing season.

Lake County, OH (Zone 7a) Moderate season
161 days
Last Spring Frost May 5
161 growing days
First Fall Frost October 13

Lake County Soil Profile

Soil Type

Silt Loam

Soil pH

6.3-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (8 days to spare)
Start indoors: Apr 1 Transplant: May 13 🍅 Harvest: Aug 26 – Sep 30
Recommended (50%) ✓ Fits season (7 days to spare)
Start indoors: Apr 7 Transplant: May 19 🍅 Harvest: Sep 1 – Oct 6
Safe Start (90%) ✓ Fits season (4 days to spare)
Start indoors: Apr 24 Transplant: Jun 5 🍅 Harvest: Sep 18 – Oct 23

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 Lake County

How your county's soil matches Hubbard Squash's growing requirements.

Soil pH

Your soil pH (6.3–7.2) overlaps with Hubbard Squash's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (5.0%) — Hubbard Squash will thrive.

How to Plant Hubbard Squash

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 95 gal / 100 sq ft

Monthly Watering Guide for Hubbard Squash

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

Month Hubbard Squash Needs Rainfall You Supplement Action
Jan 1.7" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 4.8" 0" ✅ Rainfall sufficient
Jul 4.3" 4.1" 0.2" 💧 Light watering
Aug 4.3" 3.7" 0.6" 💧 Light watering
Sep 4.3" 3.1" 1.2" 💧 Light watering
Oct 4.3" 2.5" 1.8" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 1.8" 0" ❄️ Dormant

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

Hubbard Squash 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.

Hubbard Squash needs ~1,678 GDD — county provides 2,455 GDD Excellent fit

Hubbard Squash Planting Timeline — Lake County, OH

Hubbard Squash Planting Calendar

Activity When Date Range
Start Indoors April 7 Apr 7 – Apr 21
Transplant Outdoors May 19 May 19 – Jun 2
Direct Sow May 12 May 12 – Jun 2
Harvest September 1 Sep 1 – Oct 6

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

161 days in Lake County

Growing Tips for Hubbard Squash in Lake County

Direct sow Hubbard Squash outdoors after May 05 in Lake County when soil has warmed and frost danger has passed.

Common pests for Hubbard Squash 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 in short-season areas. Requires ample space and rich soil. Harvest when the skin is very hard and the color is deep. Cure in the sun before storing.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Hubbard Squash in Lake County, OH?

Lake County is in Zone 7a with an average last frost of May 5. Plan your Hubbard Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lake County, OH?

Lake County, Ohio is in USDA Hardiness Zone 7a. The average last spring frost is May 5 and first fall frost is October 13.

🌱

Your Lake County Garden Planner — Free

A 24-page printable planner built for Lake County (Zone 7a). 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 Lake County, OH. 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.