Blog

When to Plant Kale in Matagorda County, TX

Matagorda County, Texas Zone 9b May

Your May game plan for Matagorda County, Texas

May is a pivotal month for Matagorda County, Texas gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost February 19
Avg. first frost December 6
Soil temp (4") 76°F
Watering Low
Pest pressure High
Daylight 13.4 hrs
  1. Pick kale

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

Get ahead of June
  • First harvests: kale

Instant PDF download. No spam, unsubscribe any time.

Kale is an exceptionally hardy, nutrient-dense green available in curly, lacinato, and Russian varieties. It tolerates heavy frost and often tastes sweeter after cold exposure.

Matagorda County, Texas is in USDA Zone 9b. The average last spring frost is February 19 and the first fall frost is December 6, giving you a growing season of approximately 290 days.

At an elevation of 161 feet, Matagorda County receives approximately 57.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°F, so Kale may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Kale will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kale root diseases.

Matagorda County, TX (Zone 9b) Year-round
290 days
Last Spring Frost February 19
290 growing days
First Fall Frost December 6

Matagorda County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (183 days to spare)
Start indoors: Jan 10 Transplant: Feb 7 🍅 Harvest: Apr 4 – May 30
Recommended (50%) ✓ Fits season (178 days to spare)
Start indoors: Jan 22 Transplant: Feb 19 🍅 Harvest: Apr 16 – Jun 11
Safe Start (90%) ✓ Fits season (169 days to spare)
Start indoors: Feb 12 Transplant: Mar 12 🍅 Harvest: May 7 – Jul 2

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 Matagorda County

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

Soil pH

Your soil pH (5.4–6.5) is more acidic than Kale prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Matagorda County warms quickly in spring but drains fast. Kale will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

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

How to Plant Kale

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Kale

7
successive plantings in your 290-day season

Sow every 5.7 weeks. Last sowing by Sep 27 to harvest before frost.

For a dedicated fall crop, sow by Oct 11.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Kale

Kale needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Kale Needs Rainfall You Supplement Action
Jan 1.4" 0" ❄️ Dormant
Feb 3.5" 1.9" 1.6" 💧 Light watering
Mar 3.5" 3.4" 0.1" 💧 Light watering
Apr 3.5" 6.2" 0" ✅ Rainfall sufficient
May 3.5" 7.9" 0" ✅ Rainfall sufficient
Jun 3.5" 9.4" 0" ✅ Rainfall sufficient
Jul 3.5" 7.8" 0" ✅ Rainfall sufficient
Aug 3.5" 6.9" 0" ✅ Rainfall sufficient
Sep 3.5" 5.3" 0" ✅ Rainfall sufficient
Oct 3.5" 3.7" 0" ✅ Rainfall sufficient
Nov 3.5" 1.8" 1.7" 💧 Light watering
Dec 3.5" 1.4" 2.1" 🚿 Regular watering

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

Kale 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.

Kale needs ~1,275 GDD — county provides 6,183 GDD Excellent fit

Kale Planting Timeline — Matagorda County, TX

Kale Planting Calendar

Activity When Date Range
Start Indoors January 22 Jan 22 – Feb 5
Transplant Outdoors February 19 Feb 19 – Mar 5
Direct Sow January 29 Jan 29 – Feb 19
Harvest April 16 Apr 16 – Jun 11
Fall Sowing October 11 Oct 11 – Oct 25

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

290 days in Matagorda County

Growing Tips for Kale in Matagorda County

Direct sow Kale outdoors after February 19 in Matagorda County when soil has warmed and frost danger has passed.

Sandy soil in Matagorda County dries quickly — mulch Kale with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Summer highs in Matagorda County reach 95°F — grow Kale as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Kale in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow or transplant in early spring or late summer. Harvest outer leaves first to keep plants productive. Kale overwinters in many climates and can provide greens all year.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Kale Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow 2nd year flower stalks to dry. Harvest pods when tan.
Storage Store airtight; viable 5 years at 35°F, under 50% humidity.

Isolate 1/2 mile from other brassicas (broccoli, cabbage, etc.) — they all cross.

Frequently Asked Questions

When should I plant Kale in Matagorda County, TX?

Matagorda County is in Zone 9b with an average last frost of February 19. Plan your Kale planting based on this frost date — see the calendar above for exact timing.

What planting zone is Matagorda County, TX?

Matagorda County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 19 and first fall frost is December 6.

🌱

Your Matagorda County Garden Planner — Free

A 24-page printable planner built for Matagorda County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Matagorda 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.