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When to Plant Butternut Squash in Lee County, TX

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.

Lee County, Texas is in USDA Zone 8b. The average last spring frost is February 28 and the first fall frost is November 30, giving you a growing season of approximately 275 days.

At an elevation of 1,174 feet, Lee County receives approximately 59.1 inches of rainfall annually with predominantly clay soil. Summer highs average 97ยฐF, so Butternut Squash may need afternoon shade and extra watering during peak heat. Clay soil retains moisture well for Butternut Squash, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Butternut Squash root diseases.

Lee County, TX (Zone 8b) Year-round
275 days
Last Spring Frost February 28
275 growing days
First Fall Frost November 30

Lee County Soil Profile

Soil Type

Clay

Soil pH

7.1-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (135 days to spare)
Start indoors: Jan 17 Transplant: Feb 28 🍅 Harvest: May 30 – Jul 4
Recommended (50%) ✓ Fits season (135 days to spare)
Start indoors: Jan 31 Transplant: Mar 14 🍅 Harvest: Jun 13 – Jul 18
Safe Start (90%) ✓ Fits season (128 days to spare)
Start indoors: Feb 24 Transplant: Apr 7 🍅 Harvest: Jul 7 – Aug 11

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 Lee County

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

Soil pH

Your soil pH (7.1โ€“8.2) is more alkaline than Butternut Squash prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Your clay soil in Lee County is workable for Butternut Squash. Add compost annually to improve structure.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Butternut Squash.

How to Plant Butternut Squash

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

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 493 gal / 100 sq ft

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€” 1.6" 0" โ„๏ธ Dormant
Feb 4.8" 1.8" 3" ๐Ÿšฟ Regular watering
Mar 4.8" 4.3" 0.5" ๐Ÿ’ง Light watering
Apr 4.8" 5.8" 0" โœ… Rainfall sufficient
May 4.8" 8.6" 0" โœ… Rainfall sufficient
Jun 4.8" 9.5" 0" โœ… Rainfall sufficient
Jul 4.8" 8.1" 0" โœ… Rainfall sufficient
Aug 4.8" 7.3" 0" โœ… Rainfall sufficient
Sep 4.8" 5.2" 0" โœ… Rainfall sufficient
Oct 4.8" 3.4" 1.4" ๐Ÿ’ง Light watering
Nov 4.8" 1.8" 3" ๐Ÿšฟ Regular watering
Dec โ€” 1.7" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Febโ€“Nov in Lee 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 ~2,218 GDD — county provides 6,279 GDD Excellent fit

Butternut Squash Planting Timeline โ€” Lee County, TX

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 โ€“ Feb 14
Transplant Outdoors March 14 Mar 14 โ€“ Mar 28
Direct Sow March 7 Mar 7 โ€“ Mar 28
Harvest June 13 Jun 13 โ€“ Jul 18

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors
March Transplant Outdoors Direct Sow
April โ€”
May โ€”
June Harvest
July Harvest
August โ€”
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 Only during dry spells

๐Ÿ“… Days to Maturity

85โ€“110 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 8b

๐Ÿ“† Growing Season

275 days in Lee County

Growing Tips for Butternut Squash in Lee County

Direct sow Butternut Squash outdoors after February 28 in Lee County when soil has warmed and frost danger has passed.

With Lee County's clay soil (37% clay), work in 3-4 inches of compost before planting Butternut Squash. Avoid tilling when soil is wet to prevent compaction.

With summer highs reaching 97ยฐF in Lee County, provide afternoon shade for Butternut Squash and water deeply in the morning.

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.

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 Lee County, TX?

Lee County is in Zone 8b with an average last frost of February 28. Plan your Butternut Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Lee County, TX?

Lee County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 28 and first fall frost is November 30.

๐ŸŒฑ

Plan Your Garden with Confidence

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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 Lee County, TX. Local conditions may vary. Last updated: April 2026.