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When to Plant Hubbard Squash in Medina County, TX

Medina County, Texas Zone 9a May

This month in Medina County, Texas

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

Avg. last frost March 3
Avg. first frost November 23
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
June will be here before you know it — start on
  • First harvests: hubbard squash

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Hubbard squash is a large, bumpy-skinned winter squash with dense, sweet, dry flesh ideal for baking and pies. The hard shell allows storage for 6 months or more.

Medina County, Texas is in USDA Zone 9a. The average last spring frost is March 3 and the first fall frost is November 23, giving you a growing season of approximately 265 days.

At an elevation of 1,498 feet, Medina County receives approximately 56.7 inches of rainfall annually with predominantly loam soil. Summer highs average 92°F, providing good warmth for Hubbard Squash during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Hubbard Squash root diseases.

Medina County, TX (Zone 9a) Long season
265 days
Last Spring Frost March 3
265 growing days
First Fall Frost November 23
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Medina County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (123 days to spare)
Start indoors: Jan 20 Transplant: Feb 24 🍅 Harvest: Jun 9 – Jul 14
Recommended (50%) ✓ Fits season (118 days to spare)
Start indoors: Feb 3 Transplant: Mar 10 🍅 Harvest: Jun 23 – Jul 28
Safe Start (90%) ✓ Fits season (107 days to spare)
Start indoors: Mar 4 Transplant: Apr 8 🍅 Harvest: Jul 22 – Aug 26

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 Medina County

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

Soil pH

Your soil pH (6.6–7.6) is more alkaline than Hubbard Squash prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

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

How to Plant Hubbard Squash

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 287 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Hubbard Squash

Hubbard Squash needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Hubbard Squash Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 4.3" 3.6" 0.7" 💧 Light watering
Apr 4.3" 5.6" 0" ✅ Rainfall sufficient
May 4.3" 8.1" 0" ✅ Rainfall sufficient
Jun 4.3" 8" 0" ✅ Rainfall sufficient
Jul 4.3" 8.3" 0" ✅ Rainfall sufficient
Aug 4.3" 6.8" 0" ✅ Rainfall sufficient
Sep 4.3" 5.6" 0" ✅ Rainfall sufficient
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 4.3" 1.9" 2.4" 🚿 Regular watering
Dec 1.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Medina County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Hubbard 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.

Hubbard Squash needs ~2,090 GDD — county provides 5,035 GDD Excellent fit

Hubbard Squash Planting Timeline — Medina County, TX

Hubbard Squash Planting Calendar

Activity When Date Range
Start Indoors February 3 Feb 3 – Feb 17
Transplant Outdoors March 10 Mar 10 – Mar 24
Direct Sow March 3 Mar 3 – Mar 24
Harvest June 23 Jun 23 – Jul 28

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

100–120 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 9a

📆 Growing Season

265 days in Medina County

Growing Tips for Hubbard Squash in Medina County

Direct sow Hubbard Squash outdoors after March 03 in Medina County when soil has warmed and frost danger has passed.

Common pests for Hubbard 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 in short-season areas. Requires ample space and rich soil. Harvest when the skin is very hard and the color is deep. Cure in the sun before storing.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Hubbard Squash in Medina County, TX?

Medina County is in Zone 9a with an average last frost of March 3. Plan your Hubbard Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Medina County, TX?

Medina County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 3 and first fall frost is November 23.

🌱

Your Medina County Garden Planner — Free

A 24-page printable planner built for Medina County (Zone 9a). 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 Medina 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.