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

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

Sherman County, Texas is in USDA Zone 6b. The average last spring frost is April 20 and the first fall frost is October 18, giving you a growing season of approximately 181 days.

At an elevation of 3,372 feet, Sherman County receives approximately 46.5 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91ยฐF, 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.

Sherman County, TX (Zone 6b) Moderate season
181 days
Last Spring Frost April 20
181 growing days
First Fall Frost October 18

Sherman County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.6-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (55 days to spare)
Start indoors: Mar 10 Transplant: Apr 28 🍅 Harvest: Jun 16 – Aug 18
Recommended (50%) ✓ Fits season (55 days to spare)
Start indoors: Mar 16 Transplant: May 4 🍅 Harvest: Jun 22 – Aug 24
Safe Start (90%) ✓ Fits season (56 days to spare)
Start indoors: Apr 1 Transplant: May 20 🍅 Harvest: Jul 8 – 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 Sherman County

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

Soil pH

Your soil pH (7.6โ€“8.1) is more alkaline than Squash (Summer) prefers (6.0โ€“7.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (1.0%). 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)

4
successive plantings in your 181-day season

Sow every 5.1 weeks. Last sowing by Aug 14 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

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€” 3.3" 0" โ„๏ธ Dormant
Feb โ€” 2.7" 0" โ„๏ธ Dormant
Mar โ€” 2.7" 0" โ„๏ธ Dormant
Apr 4.3" 1.7" 2.6" ๐Ÿšฟ Regular watering
May 4.3" 1.1" 3.2" ๐Ÿšฟ Regular watering
Jun 4.3" 1.6" 2.7" ๐Ÿšฟ Regular watering
Jul 4.3" 7.8" 0" โœ… Rainfall sufficient
Aug 4.3" 9.3" 0" โœ… Rainfall sufficient
Sep 4.3" 5.6" 0" โœ… Rainfall sufficient
Oct 4.3" 4.9" 0" โœ… Rainfall sufficient
Nov โ€” 3" 0" โ„๏ธ Dormant
Dec โ€” 3" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Aprโ€“Oct in Sherman 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 ~1,004 GDD — county provides 3,303 GDD Excellent fit

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

Squash (Summer) Planting Calendar

Activity When Date Range
Start Indoors March 16 Mar 16 โ€“ Mar 30
Transplant Outdoors May 4 May 4 โ€“ May 18
Direct Sow April 27 Apr 27 โ€“ May 18
Harvest June 22 Jun 22 โ€“ Aug 24

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors
April Direct Sow
May Transplant Outdoors Direct Sow
June Harvest
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"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

45โ€“65 days

๐Ÿงช Soil pH

Needs 6โ€“7.5 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 6b

๐Ÿ“† Growing Season

181 days in Sherman County

Growing Tips for Squash (Summer) in Sherman County

Direct sow Squash (Summer) outdoors after April 20 in Sherman County when soil has warmed and frost danger has passed.

Sandy soil in Sherman 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 181.0-day season in Sherman 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 Sherman County, TX?

Sherman County is in Zone 6b with an average last frost of April 20. Plan your Squash (Summer) planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Sherman County, TX?

Sherman County, Texas is in USDA Hardiness Zone 6b. The average last spring frost is April 20 and first fall frost is October 18.

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