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When to Plant Zucchini in Zavala County, TX

Zavala County, Texas Zone 9a May

This month in Zavala County, Texas

Each item below is timed to Zavala County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost February 26
Avg. first frost November 29
Soil temp (4") 60°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. It's harvest week for zucchini

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Get ahead of June
  • First harvests: zucchini

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Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

Zavala County, Texas is in USDA Zone 9a. The average last spring frost is February 26 and the first fall frost is November 29, giving you a growing season of approximately 276 days.

At an elevation of 4,905 feet, Zavala County receives approximately 59.7 inches of rainfall annually with predominantly loam soil. Summer highs average 93°F, providing good warmth for Zucchini during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Zucchini root diseases.

Zavala County, TX (Zone 9a) Year-round
276 days
Last Spring Frost February 26
276 growing days
First Fall Frost November 29
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Zavala County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (170 days to spare)
Start indoors: Jan 15 Transplant: Feb 19 🍅 Harvest: Apr 9 – Jun 4
Recommended (50%) ✓ Fits season (164 days to spare)
Start indoors: Jan 29 Transplant: Mar 5 🍅 Harvest: Apr 23 – Jun 18
Safe Start (90%) ✓ Fits season (156 days to spare)
Start indoors: Feb 23 Transplant: Mar 30 🍅 Harvest: May 18 – Jul 13

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 Zavala County

How your county's soil matches Zucchini's growing requirements.

Soil pH

Your soil pH (6.4–7.4) is within Zucchini's preferred range (6.0–7.5).

Soil Texture

The loam soil in Zavala County is excellent for Zucchini — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

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

How to Plant Zucchini

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

Succession Planting Zucchini

7
successive plantings in your 276-day season

Sow every 5.1 weeks. Last sowing by Sep 30 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.9″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 727 gal / 100 sq ft

Monthly Watering Guide for Zucchini

Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Zucchini Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 5.2" 1.9" 3.3" 🚿 Regular watering
Mar 5.2" 3.2" 2" 💧 Light watering
Apr 5.2" 6.7" 0" ✅ Rainfall sufficient
May 5.2" 8.7" 0" ✅ Rainfall sufficient
Jun 5.2" 10.5" 0" ✅ Rainfall sufficient
Jul 5.2" 6.5" 0" ✅ Rainfall sufficient
Aug 5.2" 7.8" 0" ✅ Rainfall sufficient
Sep 5.2" 5.9" 0" ✅ Rainfall sufficient
Oct 5.2" 3.5" 1.7" 💧 Light watering
Nov 5.2" 2" 3.2" 🚿 Regular watering
Dec 1.6" 0" ❄️ Dormant

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

Zucchini 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.

Zucchini needs ~1,037 GDD — county provides 5,470 GDD Excellent fit

Zucchini Planting Timeline — Zavala County, TX

Zucchini Planting Calendar

Activity When Date Range
Start Indoors January 29 Jan 29 – Feb 12
Transplant Outdoors March 5 Mar 5 – Mar 19
Direct Sow February 26 Feb 26 – Mar 19
Harvest April 23 Apr 23 – Jun 18

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · Only during dry spells

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 9a

📆 Growing Season

276 days in Zavala County

Growing Tips for Zucchini in Zavala County

Direct sow Zucchini outdoors after February 26 in Zavala County when soil has warmed and frost danger has passed.

Your generous 277.0-day season in Zavala County allows multiple plantings of Zucchini. Sow every 22.0 days for continuous harvest.

Common pests for Zucchini 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 fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zucchini in Zavala County, TX?

Zavala County is in Zone 9a with an average last frost of February 26. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Zavala County, TX?

Zavala County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 26 and first fall frost is November 29.

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Your Zavala County Garden Planner — Free

A 24-page printable planner built for Zavala 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 Zavala 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.