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When to Plant Tomatoes in Brooks County, TX

Tomatoes are the most popular home garden crop, available in thousands of varieties from tiny cherries to massive beefsteaks. They are warm-season plants needing full sun.

Brooks County, Texas is in USDA Zone 9a. The average last spring frost is February 10 and the first fall frost is December 13, giving you a growing season of approximately 306 days.

At an elevation of 2,752 feet, Brooks County receives approximately 64.5 inches of rainfall annually with predominantly loam soil. Summer highs average 104ยฐF, so Tomatoes may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Tomatoes root diseases.

Brooks County, TX (Zone 9a) Year-round
306 days
Last Spring Frost February 10
306 growing days
First Fall Frost December 13

Brooks County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (179 days to spare)
Start indoors: Dec 8 Transplant: Jan 26 🍅 Harvest: Mar 30 – Jun 8
Recommended (50%) ✓ Fits season (166 days to spare)
Start indoors: Dec 30 Transplant: Feb 17 🍅 Harvest: Apr 21 – Jun 30
Safe Start (90%) ✓ Fits season (152 days to spare)
Start indoors: Jan 23 Transplant: Mar 13 🍅 Harvest: May 15 – Jul 24

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 Brooks County

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

Soil pH

Your soil pH (6.7โ€“7.2) overlaps with Tomatoes's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Brooks County is excellent for Tomatoes โ€” good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Tomatoes.

Organic Matter

Organic matter is moderate (2.1%). Annual compost additions will help Tomatoes.

How to Plant Tomatoes

0.5"
Planting Depth
24"
Between Plants
36"
Between Rows

Succession Planting Tomatoes

6
successive plantings in your 306-day season

Sow every 6.9 weeks. Last sowing by Sep 19 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.9″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,851 gal / 100 sq ft

Monthly Watering Guide for Tomatoes

Tomatoes 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 Tomatoes Needs Rainfall You Supplement Action
Jan โ€” 1.9" 0" โ„๏ธ Dormant
Feb 5.2" 2.5" 2.7" ๐Ÿšฟ Regular watering
Mar 5.2" 3.6" 1.6" ๐Ÿ’ง Light watering
Apr 5.2" 6.1" 0" โœ… Rainfall sufficient
May 5.2" 10.3" 0" โœ… Rainfall sufficient
Jun 5.2" 10.5" 0" โœ… Rainfall sufficient
Jul 5.2" 7.3" 0" โœ… Rainfall sufficient
Aug 5.2" 7.2" 0" โœ… Rainfall sufficient
Sep 5.2" 6" 0" โœ… Rainfall sufficient
Oct 5.2" 4.8" 0.4" ๐Ÿ’ง Light watering
Nov 5.2" 2.3" 2.9" ๐Ÿšฟ Regular watering
Dec 5.2" 1.8" 3.4" ๐Ÿšฟ Regular watering

Water needs are for active growing months only (Febโ€“Dec in Brooks County). Supplement amounts are based on average rainfall โ€” actual needs vary with temperature, soil, and mulching.

Tomatoes 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" โ€” every day above 50ยฐF 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.

Tomatoes needs ~2,030 GDD — county provides 8,596 GDD Excellent fit

Tomatoes Planting Timeline โ€” Brooks County, TX

Tomatoes Planting Calendar

Activity When Date Range
Start Indoors December 30 Dec 30 โ€“ Jan 13
Transplant Outdoors February 17 Feb 17 โ€“ Mar 3
Direct Sow February 10 Feb 10 โ€“ Mar 3
Harvest April 21 Apr 21 โ€“ Jun 30

Plant 0.5" deep ยท 24" apart ยท Rows 36" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.2"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

60โ€“85 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 9a

๐Ÿ“† Growing Season

306 days in Brooks County

Growing Tips for Tomatoes in Brooks County

Direct sow Tomatoes outdoors after February 10 in Brooks County when soil has warmed and frost danger has passed.

With summer highs reaching 104ยฐF in Brooks County, provide afternoon shade for Tomatoes and water deeply in the morning.

Common pests for Tomatoes in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 6-8 weeks before last frost. Bury transplants deep to encourage rooting along the stem. Provide consistent moisture to prevent blossom end rot and cracking.

Recommended Tomatoes Varieties for Brooks County

Heat-set varieties that pollinate reliably above 90ยฐF

Solar Fire Florida 91 Phoenix Heat Wave II

Your long season supports large indeterminate heirloom types

Brandywine (80d) Cherokee Purple (80d) San Marzano (80d) Mortgage Lifter (85d)

Disease-resistant varieties for your humid climate

Mountain Merit (VF) Defiant (LB) Iron Lady (EB/LB/SF)

Companion Planting

Good Companions

Avoid Planting Near

  • Cabbage
  • Fennel
  • Potatoes

Check more plant combinations with our Companion Planting Checker →

๐ŸŒพ Save Your Own Tomatoes Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Scoop seeds from ripe fruit; ferment 2-3 days to remove gel coating.
Storage Store airtight; viable 4-6 years at 35ยฐF, under 45% humidity.

Isolate 25 ft between varieties for purity. Use open-pollinated varieties for true-to-type seeds.

Frequently Asked Questions

When should I plant Tomatoes in Brooks County, TX?

Brooks County is in Zone 9a with an average last frost of February 10. Plan your Tomatoes planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Brooks County, TX?

Brooks County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 10 and first fall frost is December 13.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Brooks County gardeners in Zone 9a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Brooks County, TX. Local conditions may vary. Last updated: April 2026.