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When to Plant Squash (Winter) in Miami County, KS

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

Miami County, Kansas is in USDA Zone 6a. The average last spring frost is April 12 and the first fall frost is October 25, giving you a growing season of approximately 196 days.

At an elevation of 689 feet, Miami County receives approximately 21.7 inches of rainfall annually with predominantly loam soil. Summer highs average 88ยฐF, providing good warmth for Squash (Winter) during the growing season.

Miami County, KS (Zone 6a) Moderate season
196 days
Last Spring Frost April 12
196 growing days
First Fall Frost October 25

Miami County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (40 days to spare)
Start indoors: Mar 2 Transplant: Apr 20 🍅 Harvest: Jul 13 – Sep 7
Recommended (50%) ✓ Fits season (42 days to spare)
Start indoors: Mar 8 Transplant: Apr 26 🍅 Harvest: Jul 19 – Sep 13
Safe Start (90%) ✓ Fits season (38 days to spare)
Start indoors: Mar 23 Transplant: May 11 🍅 Harvest: Aug 3 – Sep 28

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
0.5″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 933 gal / 100 sq ft
Squash (Winter) needs ~1,600 GDD — county provides 3,136 GDD Excellent fit

Squash (Winter) Planting Timeline โ€” Miami County, KS

Squash (Winter) Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 โ€“ Mar 22
Transplant Outdoors April 26 Apr 26 โ€“ May 10
Direct Sow April 19 Apr 19 โ€“ May 10
Harvest July 19 Jul 19 โ€“ Sep 13

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors
April Transplant Outdoors Direct Sow
May Transplant Outdoors Direct Sow
June โ€”
July Harvest
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€“120 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 6a

Growing Season

196 days

Growing Tips for Miami County

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

Level Up Your Garden

Frequently Asked Questions

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

Miami County is in Zone 6a with an average last frost of April 12. Plan your Squash (Winter) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Miami County, KS?

Miami County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 12 and first fall frost is October 25.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Miami County gardeners in Zone 6a 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 Miami County, KS. Local conditions may vary. Last updated: April 2026.