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When to Plant Squash (Summer) in Cass County, TX

Summer squash includes zucchini, yellow crookneck, and pattypan varieties that are harvested young and tender. They are prolific producers in warm weather.

Cass County, Texas is in USDA Zone 8a. The average last spring frost is March 14 and the first fall frost is November 16, giving you a growing season of approximately 247 days.

At an elevation of 392 feet, Cass County receives approximately 71.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94ยฐF, providing good warmth for Squash (Summer) during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Squash (Summer) will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Squash (Summer) root diseases.

Cass County, TX (Zone 8a) Long season
247 days
Last Spring Frost March 14
247 growing days
First Fall Frost November 16

Cass County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.6-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Start indoors: Feb 6 Transplant: Mar 20 🍅 Harvest: May 8 – Jul 10
Recommended (50%) ✓ Fits season (121 days to spare)
Start indoors: Feb 14 Transplant: Mar 28 🍅 Harvest: May 16 – Jul 18
Safe Start (90%) ✓ Fits season (113 days to spare)
Start indoors: Mar 8 Transplant: Apr 19 🍅 Harvest: Jun 7 – Aug 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 Cass County

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

Soil pH

Your soil pH (5.6โ€“6.7) overlaps with Squash (Summer)'s range (6.0โ€“7.5), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Squash (Summer).

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Squash (Summer).

How to Plant Squash (Summer)

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

Succession Planting Squash (Summer)

6
successive plantings in your 247-day season

Sow every 5.1 weeks. Last sowing by Sep 12 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.2″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 178 gal / 100 sq ft

Monthly Watering Guide for Squash (Summer)

Squash (Summer) 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 (Summer) Needs Rainfall You Supplement Action
Jan โ€” 2" 0" โ„๏ธ Dormant
Feb โ€” 2.5" 0" โ„๏ธ Dormant
Mar 4.3" 4.3" 0" โœ… Rainfall sufficient
Apr 4.3" 6.6" 0" โœ… Rainfall sufficient
May 4.3" 11.3" 0" โœ… Rainfall sufficient
Jun 4.3" 12.4" 0" โœ… Rainfall sufficient
Jul 4.3" 8.9" 0" โœ… Rainfall sufficient
Aug 4.3" 8.7" 0" โœ… Rainfall sufficient
Sep 4.3" 6.7" 0" โœ… Rainfall sufficient
Oct 4.3" 4.3" 0" โœ… Rainfall sufficient
Nov 4.3" 2.4" 1.9" ๐Ÿ’ง Light watering
Dec โ€” 1.7" 0" โ„๏ธ Dormant

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

Squash (Summer) 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.

Squash (Summer) needs ~1,128 GDD — county provides 5,063 GDD Excellent fit

Squash (Summer) Planting Timeline โ€” Cass County, TX

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors February 14 Feb 14 โ€“ Feb 28
Transplant Outdoors March 28 Mar 28 โ€“ Apr 11
Direct Sow March 21 Mar 21 โ€“ Apr 11
Harvest May 16 May 16 โ€“ Jul 18

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
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"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

45โ€“65 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

247 days in Cass County

Growing Tips for Squash (Summer) in Cass County

Direct sow Squash (Summer) outdoors after March 14 in Cass County when soil has warmed and frost danger has passed.

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

Your generous 247.0-day season in Cass County allows multiple plantings of Squash (Summer). Sow every 22.0 days for continuous harvest.

Common pests for Squash (Summer) 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 mounds. Harvest frequently when fruits are 6-8 inches for best texture. Check plants daily as they grow rapidly in summer heat.

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 (Summer) in Cass County, TX?

Cass County is in Zone 8a with an average last frost of March 14. Plan your Squash (Summer) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cass County, TX?

Cass County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 14 and first fall frost is November 16.

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