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When to Plant Acorn Squash in Grimes County, TX

Acorn squash is a small winter squash with dark green, ribbed skin and mildly sweet orange flesh. It is perfect for stuffing and roasting as individual servings.

Grimes County, Texas is in USDA Zone 8b. The average last spring frost is February 25 and the first fall frost is December 1, giving you a growing season of approximately 279 days.

At an elevation of 33 feet, Grimes County receives approximately 65.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91ยฐF, providing good warmth for Acorn Squash during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Acorn Squash will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Acorn Squash root diseases.

Grimes County, TX (Zone 8b) Year-round
279 days
Last Spring Frost February 25
279 growing days
First Fall Frost December 1

Grimes County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (150 days to spare)
Start indoors: Jan 15 Transplant: Feb 26 🍅 Harvest: May 21 – Jun 25
Recommended (50%) ✓ Fits season (146 days to spare)
Start indoors: Jan 28 Transplant: Mar 11 🍅 Harvest: Jun 3 – Jul 8
Safe Start (90%) ✓ Fits season (149 days to spare)
Start indoors: Feb 11 Transplant: Mar 25 🍅 Harvest: Jun 17 – Jul 22

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 Grimes County

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

Soil pH

Your soil pH (5.8โ€“6.5) is within Acorn Squash's preferred range (5.5โ€“7.0).

Soil Texture

Sandy soil in Grimes County warms quickly in spring but drains fast. Acorn Squash will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Acorn Squash.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Acorn Squash.

How to Plant Acorn Squash

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

Succession Planting Acorn Squash

4
successive plantings in your 279-day season

Sow every 9.1 weeks. Last sowing by Aug 23 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
1.0″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,352 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Acorn Squash

Acorn 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 Acorn Squash Needs Rainfall You Supplement Action
Jan โ€” 1.9" 0" โ„๏ธ Dormant
Feb 4.8" 2.1" 2.7" ๐Ÿšฟ Regular watering
Mar 4.8" 4.7" 0.1" ๐Ÿ’ง Light watering
Apr 4.8" 6" 0" โœ… Rainfall sufficient
May 4.8" 9.9" 0" โœ… Rainfall sufficient
Jun 4.8" 9.9" 0" โœ… Rainfall sufficient
Jul 4.8" 8.3" 0" โœ… Rainfall sufficient
Aug 4.8" 8.3" 0" โœ… Rainfall sufficient
Sep 4.8" 6.6" 0" โœ… Rainfall sufficient
Oct 4.8" 3.9" 0.9" ๐Ÿ’ง Light watering
Nov 4.8" 2" 2.8" ๐Ÿšฟ Regular watering
Dec 4.8" 1.7" 3.1" ๐Ÿšฟ Regular watering

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

Acorn 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.

Acorn Squash needs ~1,642 GDD — county provides 5,110 GDD Excellent fit

Acorn Squash Planting Timeline โ€” Grimes County, TX

Acorn Squash Planting Calendar

Activity When Date Range
Start Indoors January 28 Jan 28 โ€“ Feb 11
Transplant Outdoors March 11 Mar 11 โ€“ Mar 25
Direct Sow March 4 Mar 4 โ€“ Mar 25
Harvest June 3 Jun 3 โ€“ Jul 8

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 1-2 times/week

๐Ÿ“… Days to Maturity

80โ€“100 days

๐Ÿงช Soil pH

Needs 5.5โ€“7 ยท Your soil: ideal

๐Ÿ—บ๏ธ USDA Zone

Zone 8b

๐Ÿ“† Growing Season

279 days in Grimes County

Growing Tips for Acorn Squash in Grimes County

Direct sow Acorn Squash outdoors after February 25 in Grimes County when soil has warmed and frost danger has passed.

Sandy soil in Grimes County dries quickly โ€” mulch Acorn Squash with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Common pests for Acorn 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

Direct sow after last frost. Harvest when the ground spot turns orange and the skin is hard. Acorn squash has a shorter storage life than butternut, lasting about 2 months.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Acorn Squash in Grimes County, TX?

Grimes County is in Zone 8b with an average last frost of February 25. Plan your Acorn Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Grimes County, TX?

Grimes County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 25 and first fall frost is December 1.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Grimes County gardeners in Zone 8b 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 Grimes County, TX. Local conditions may vary. Last updated: April 2026.