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When to Plant Acorn Squash in Cameron County, TX

Cameron County, Texas Zone 10a May

What to do in May

We've pulled the most time-sensitive tasks for Cameron County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost February 4
Avg. first frost December 22
Soil temp (4") 68°F
Watering Low
Pest pressure High
Daylight 13.3 hrs
  1. Collect acorn squash at their peak

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

Coming up in June — start thinking about
  • First harvests: acorn squash

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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.

Cameron County, Texas is in USDA Zone 10a. The average last spring frost is February 4 and the first fall frost is December 22, giving you a growing season of approximately 321 days.

At an elevation of 4,025 feet, Cameron County receives approximately 58.6 inches of rainfall annually with predominantly loam soil. Summer highs average 103°F, so Acorn Squash may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Acorn Squash root diseases.

Cameron County, TX (Zone 10a) Year-round
321 days
Last Spring Frost February 4
321 growing days
First Fall Frost December 22

Cameron County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (207 days to spare)
Start indoors: Dec 20 Transplant: Jan 24 🍅 Harvest: Apr 18 – May 23
Recommended (50%) ✓ Fits season (195 days to spare)
Start indoors: Jan 7 Transplant: Feb 11 🍅 Harvest: May 6 – Jun 10
Safe Start (90%) ✓ Fits season (172 days to spare)
Start indoors: Feb 4 Transplant: Mar 11 🍅 Harvest: Jun 3 – Jul 8

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 Cameron County

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

Soil pH

Your soil pH (6.7–7.8) is more alkaline than Acorn Squash prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

The loam soil in Cameron County is excellent for Acorn Squash — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help 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 321-day season

Sow every 9.1 weeks. Last sowing by Sep 13 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.8″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 962 gal / 100 sq ft

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 1.6" 0" ❄️ Dormant
Feb 4.8" 2.2" 2.6" 🚿 Regular watering
Mar 4.8" 3.1" 1.7" 💧 Light watering
Apr 4.8" 6.1" 0" ✅ Rainfall sufficient
May 4.8" 9.2" 0" ✅ Rainfall sufficient
Jun 4.8" 9.1" 0" ✅ Rainfall sufficient
Jul 4.8" 7.5" 0" ✅ Rainfall sufficient
Aug 4.8" 6.9" 0" ✅ Rainfall sufficient
Sep 4.8" 5.6" 0" ✅ Rainfall sufficient
Oct 4.8" 3.8" 1" 💧 Light watering
Nov 4.8" 2.1" 2.7" 🚿 Regular watering
Dec 4.8" 1.4" 3.4" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Cameron County). Supplement amounts are based on average rainfall — 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" — every day above 50°F 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 ~2,452 GDD — county provides 8,774 GDD Excellent fit

Acorn Squash Planting Timeline — Cameron County, TX

Acorn Squash Planting Calendar

Activity When Date Range
Start Indoors January 7 Jan 7 – Jan 21
Transplant Outdoors February 11 Feb 11 – Feb 25
Direct Sow February 4 Feb 4 – Feb 25
Harvest May 6 May 6 – Jun 10

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Transplant Outdoors Direct Sow
March
April
May Harvest
June Harvest
July
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · 1-2 times/week

📅 Days to Maturity

80–100 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 10a

📆 Growing Season

321 days in Cameron County

Growing Tips for Acorn Squash in Cameron County

Direct sow Acorn Squash outdoors after February 04 in Cameron County when soil has warmed and frost danger has passed.

With summer highs reaching 103°F in Cameron County, provide afternoon shade for Acorn Squash and water deeply in the morning.

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 Cameron County, TX?

Cameron County is in Zone 10a with an average last frost of February 4. Plan your Acorn Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Cameron County, TX?

Cameron County, Texas is in USDA Hardiness Zone 10a. The average last spring frost is February 4 and first fall frost is December 22.

🌱

Your Cameron County Garden Planner — Free

A 24-page printable planner built for Cameron County (Zone 10a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Cameron County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.