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When to Plant Zucchini in Wilson County, TX

Wilson County, Texas Zone 9a May

Your May planting checklist for Wilson County, Texas

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

Avg. last frost March 4
Avg. first frost November 25
Soil temp (4") 67°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Basket week: zucchini

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

Before June arrives, get these ready
  • 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.

Wilson County, Texas is in USDA Zone 9a. The average last spring frost is March 4 and the first fall frost is November 25, giving you a growing season of approximately 266 days.

At an elevation of 2,660 feet, Wilson County receives approximately 62.3 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.

Wilson County, TX (Zone 9a) Long season
266 days
Last Spring Frost March 4
266 growing days
First Fall Frost November 25
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Wilson County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (156 days to spare)
Start indoors: Jan 23 Transplant: Feb 27 🍅 Harvest: Apr 17 – Jun 12
Recommended (50%) ✓ Fits season (154 days to spare)
Start indoors: Feb 4 Transplant: Mar 11 🍅 Harvest: Apr 29 – Jun 24
Safe Start (90%) ✓ Fits season (145 days to spare)
Start indoors: Mar 2 Transplant: Apr 6 🍅 Harvest: May 25 – Jul 20

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 Wilson County

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

Soil pH

Your soil pH (6.5–7.4) is within Zucchini's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Zucchini.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Zucchini.

How to Plant Zucchini

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

Succession Planting Zucchini

7
successive plantings in your 266-day season

Sow every 5.1 weeks. Last sowing by Sep 26 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
1.0″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,637 gal / 100 sq ft
Drought risk

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

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 1.5" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 5.2" 4.2" 1" 💧 Light watering
Apr 5.2" 5.6" 0" ✅ Rainfall sufficient
May 5.2" 9.2" 0" ✅ Rainfall sufficient
Jun 5.2" 10.7" 0" ✅ Rainfall sufficient
Jul 5.2" 8.7" 0" ✅ Rainfall sufficient
Aug 5.2" 7.7" 0" ✅ Rainfall sufficient
Sep 5.2" 5.1" 0.1" 💧 Light watering
Oct 5.2" 3.9" 1.3" 💧 Light watering
Nov 5.2" 2.1" 3.1" 🚿 Regular watering
Dec 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Wilson 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 5,253 GDD Excellent fit

Zucchini Planting Timeline — Wilson County, TX

Zucchini Planting Calendar

Activity When Date Range
Start Indoors February 4 Feb 4 – Feb 18
Transplant Outdoors March 11 Mar 11 – Mar 25
Direct Sow March 4 Mar 4 – Mar 25
Harvest April 29 Apr 29 – Jun 24

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
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 · 1-2 times/week

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 9a

📆 Growing Season

266 days in Wilson County

Growing Tips for Zucchini in Wilson County

Direct sow Zucchini outdoors after March 04 in Wilson County when soil has warmed and frost danger has passed.

Your generous 266.0-day season in Wilson 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 Wilson County, TX?

Wilson County is in Zone 9a with an average last frost of March 4. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wilson County, TX?

Wilson County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 4 and first fall frost is November 25.

🌱

Your Wilson County Garden Planner — Free

A 24-page printable planner built for Wilson 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 Wilson 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.