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When to Plant Butternut Squash in Anderson County, KS

Butternut squash is a popular winter squash with a long neck, small seed cavity, and sweet, nutty orange flesh. It stores exceptionally well for months.

Anderson County, Kansas is in USDA Zone 6a. The average last spring frost is April 11 and the first fall frost is October 24, giving you a growing season of approximately 196 days.

At an elevation of 466 feet, Anderson County receives approximately 23.3 inches of rainfall annually with predominantly loam soil. Summer highs average 86ยฐF, providing good warmth for Butternut Squash during the growing season.

Anderson County, KS (Zone 6a) Moderate season
196 days
Last Spring Frost April 11
196 growing days
First Fall Frost October 24

Anderson County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (55 days to spare)
Start indoors: Mar 1 Transplant: Apr 19 🍅 Harvest: Jul 19 – Aug 23
Recommended (50%) ✓ Fits season (56 days to spare)
Start indoors: Mar 7 Transplant: Apr 25 🍅 Harvest: Jul 25 – Aug 29
Safe Start (90%) ✓ Fits season (61 days to spare)
Start indoors: Mar 18 Transplant: May 6 🍅 Harvest: Aug 5 – Sep 9

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 Anderson County

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

Soil pH

Your soil pH (6.5โ€“7.4) overlaps with Butternut Squash's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Anderson County is excellent for Butternut Squash โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.4%) โ€” Butternut Squash will thrive.

How to Plant Butternut Squash

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

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.5″/week
You supply
0.7″/week
Watering frequency 2-3 times/week
Season total 1,257 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Butternut Squash

Butternut Squash needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Butternut Squash Needs Rainfall You Supplement Action
Jan โ€” 0.6" 0" โ„๏ธ Dormant
Feb โ€” 0.7" 0" โ„๏ธ Dormant
Mar โ€” 1.4" 0" โ„๏ธ Dormant
Apr 4.8" 2.3" 2.5" ๐Ÿšฟ Regular watering
May 4.8" 3.9" 0.9" ๐Ÿ’ง Light watering
Jun 4.8" 3.8" 1" ๐Ÿ’ง Light watering
Jul 4.8" 2.5" 2.3" ๐Ÿ’ง Light watering
Aug 4.8" 2.9" 1.9" ๐Ÿ’ง Light watering
Sep 4.8" 2.2" 2.6" ๐Ÿšฟ Regular watering
Oct 4.8" 1.7" 3.1" ๐Ÿšฟ Regular watering
Nov โ€” 0.8" 0" โ„๏ธ Dormant
Dec โ€” 0.6" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Anderson County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Butternut 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" โ€” every day above 50ยฐF 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.

Butternut Squash needs ~1,414 GDD — county provides 2,842 GDD Excellent fit

Butternut Squash Planting Timeline โ€” Anderson County, KS

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors March 7 Mar 7 โ€“ Mar 21
Transplant Outdoors April 25 Apr 25 โ€“ May 9
Direct Sow April 18 Apr 18 โ€“ May 9
Harvest July 25 Jul 25 โ€“ Aug 29

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 โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.1"/week ยท 2-3 times/week

๐Ÿ“… Days to Maturity

85โ€“110 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 6a

๐Ÿ“† Growing Season

196 days in Anderson County

Growing Tips for Butternut Squash in Anderson County

Direct sow Butternut Squash outdoors after April 11 in Anderson County when soil has warmed and frost danger has passed.

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

Anderson County receives only 23" of rain annually. Butternut Squash needs consistent moisture โ€” install drip irrigation or water deeply 2-3 times per week.

General growing tips

Start seeds indoors 3 weeks early or direct sow after frost. Allow 6-8 feet for sprawling vines. Harvest when the skin is hard and uniformly tan. Cure in the sun for 10 days.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Butternut Squash in Anderson County, KS?

Anderson County is in Zone 6a with an average last frost of April 11. Plan your Butternut Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Anderson County, KS?

Anderson County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 11 and first fall frost is October 24.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Anderson County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

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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 Anderson County, KS. Local conditions may vary. Last updated: April 2026.