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When to plant Squash (Winter) in Pipestone County County,

For Squash (Winter) in Pipestone County County, the safe spring window opens around May 18 and closes around June 8. Last expected frost is May 4, first fall frost October 2, giving a 151-day growing season.

When to Plant Squash (Winter) in Pipestone County, MN

Pipestone County, Minnesota Zone 4b June

June in the garden — Pipestone County, Minnesota

Your garden in Pipestone County, Minnesota is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost May 4
Avg. first frost October 2
Soil temp (4") 65°F
Watering Low
Pest pressure High
Daylight 15.3 hrs
  1. Time to start squash (winter) inside

    These need a head start before your last frost (May 4). Sow into cells now so you're ready to transplant in a few weeks.

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Winter squash includes butternut, acorn, delicata, and hubbard varieties grown to full maturity with hard rinds for storage. They develop sweet, dense flesh.

Pipestone County, Minnesota is in USDA Zone 4b. The average last spring frost is May 4 and the first fall frost is October 2, giving you a growing season of approximately 151 days.

At an elevation of 906 feet, Pipestone County receives approximately 37.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Squash (Winter) to ensure they mature before fall.

Pipestone County, MN (Zone 4b) Moderate season
151 days
Last Spring Frost May 4
151 growing days
First Fall Frost October 2

Pipestone County Soil Profile

Soil Type

Silt Loam

Soil pH

6-6.8

Drainage

Well Drained

Squash (Winter) Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 17 Transplant: May 19 🍅 Harvest: Aug 11 – Oct 6
Recommended (50%) ✗ May not fit
Start indoors: Mar 23 Transplant: May 25 🍅 Harvest: Aug 17 – Oct 12
Safe Start (90%) ✗ May not fit
Start indoors: Apr 3 Transplant: Jun 5 🍅 Harvest: Aug 28 – 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 Pipestone County

How your county's soil matches Squash (Winter)'s growing requirements.

Soil pH

Your soil pH (6.0–6.8) is within Squash (Winter)'s preferred range (6.0–7.0).

Soil Texture

The silt loam soil in Pipestone County is excellent for Squash (Winter) — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

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

How to Plant Squash (Winter)

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

Succession Planting Squash (Winter)

2
successive plantings in your 151-day season

Sow every 9.1 weeks. Last sowing by Jun 04 to harvest before frost.

Squash (Winter) Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Squash (Winter)

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

Month Squash (Winter) Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.8" 0" ❄️ Dormant
Mar 2.9" 0" ❄️ Dormant
Apr 3.9" 0" ❄️ Dormant
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 4.6" 0" ✅ Rainfall sufficient
Jul 4.3" 3.7" 0.6" 💧 Light watering
Aug 4.3" 3.8" 0.5" 💧 Light watering
Sep 4.3" 3.2" 1.1" 💧 Light watering
Oct 4.3" 3" 1.3" 💧 Light watering
Nov 2.3" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

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

Squash (Winter) 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.

Squash (Winter) needs ~1,225 GDD — county provides 1,849 GDD Excellent fit

Squash (Winter) Planting Timeline — Pipestone County, MN

Squash (Winter) Planting Calendar

Activity When Date Range
Start Indoors March 23 Mar 23 – Apr 6
Transplant Outdoors May 25 May 25 – Jun 8
Direct Sow May 18 May 18 – Jun 8
Harvest August 17 Aug 17 – Oct 12

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 · Natural rainfall sufficient

📅 Days to Maturity

80–120 days

🧪 Soil pH

Needs 6–7 · Your soil: ideal

🗺️ USDA Zone

Zone 4b

📆 Growing Season

151 days in Pipestone County

Growing Tips for Squash (Winter) in Pipestone County

Direct sow Squash (Winter) outdoors after May 04 in Pipestone County when soil has warmed and frost danger has passed.

Common pests for Squash (Winter) in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost on rich mounds. Allow ample space for sprawling vines. Cure harvested fruits in the sun for 10 days before storing in a cool, dry place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Squash (Winter) in Pipestone County, MN?

Pipestone County is in Zone 4b with an average last frost of May 4. Plan your Squash (Winter) planting based on this frost date — see the calendar above for exact timing.

What planting zone is Pipestone County, MN?

Pipestone County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is May 4 and first fall frost is October 2.

When should I plant Squash (Winter) in Pipestone County County, ?

In Pipestone County County, , plant Squash (Winter) after the last frost (around May 4) and before the first frost (around October 2). Best results when soil holds above 50°F.

What growing zone is Pipestone County County, for Squash (Winter)?

Pipestone County County sits in USDA Zone 4b. Squash (Winter) grows reliably in zones 3a through 11b, so it's a good fit here.

Can Squash (Winter) grow in Pipestone County County's climate?

Yes — Squash (Winter) grows well in Pipestone County County's temperate climate. Pipestone County County averages a 151-day frost-free season, with last frost around May 4 and first frost around October 2.

🌱

Your Pipestone County Garden Planner — Free

A 22-page printable planner built for Pipestone County (Zone 4b). 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 Pipestone County, MN. 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.