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When to Plant Basil in Gonzales County, TX

Basil is a fragrant warm-season herb essential to Italian and Thai cuisines. It comes in many varieties including sweet, Thai, purple, and lemon types.

Gonzales County, Texas is in USDA Zone 8b. The average last spring frost is February 28 and the first fall frost is November 28, giving you a growing season of approximately 273 days.

At an elevation of 4,385 feet, Gonzales County receives approximately 67 inches of rainfall annually with predominantly loam soil. Summer highs average 97ยฐF, so Basil may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Basil root diseases.

Gonzales County, TX (Zone 8b) Year-round
273 days
Last Spring Frost February 28
273 growing days
First Fall Frost November 28

Gonzales County Soil Profile

Soil Type

Loam

Soil pH

6.2-7.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (142 days to spare)
Start indoors: Dec 28 Transplant: Mar 1 🍅 Harvest: Apr 26 – Jun 28
Recommended (50%) ✓ Fits season (140 days to spare)
Start indoors: Jan 10 Transplant: Mar 14 🍅 Harvest: May 9 – Jul 11
Safe Start (90%) ✓ Fits season (131 days to spare)
Start indoors: Feb 2 Transplant: Apr 6 🍅 Harvest: Jun 1 – Aug 3

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 Gonzales County

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

Soil pH

Your soil pH (6.2โ€“7.4) overlaps with Basil's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Basil.

How to Plant Basil

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Basil

6
successive plantings in your 273-day season

Sow every 5.7 weeks. Last sowing by Sep 14 to harvest before frost.

Plant Water Budget

Plant needs
0.6″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Monthly Watering Guide for Basil

Basil needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Basil Needs Rainfall You Supplement Action
Jan โ€” 1.5" 0" โ„๏ธ Dormant
Feb 2.6" 2" 0.6" ๐Ÿ’ง Light watering
Mar 2.6" 4.3" 0" โœ… Rainfall sufficient
Apr 2.6" 7.7" 0" โœ… Rainfall sufficient
May 2.6" 10.3" 0" โœ… Rainfall sufficient
Jun 2.6" 9.8" 0" โœ… Rainfall sufficient
Jul 2.6" 9" 0" โœ… Rainfall sufficient
Aug 2.6" 8.8" 0" โœ… Rainfall sufficient
Sep 2.6" 5.3" 0" โœ… Rainfall sufficient
Oct 2.6" 4.3" 0" โœ… Rainfall sufficient
Nov 2.6" 2.5" 0.1" ๐Ÿ’ง Light watering
Dec โ€” 1.6" 0" โ„๏ธ Dormant

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

Basil 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.

Basil needs ~1,422 GDD — county provides 6,233 GDD Excellent fit

Basil Planting Timeline โ€” Gonzales County, TX

Basil Planting Calendar

Activity When Date Range
Start Indoors January 10 Jan 10 โ€“ Jan 24
Transplant Outdoors March 14 Mar 14 โ€“ Mar 28
Direct Sow March 7 Mar 7 โ€“ Mar 28
Harvest May 9 May 9 โ€“ Jul 11

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.6"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

50โ€“75 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 8b

๐Ÿ“† Growing Season

273 days in Gonzales County

Growing Tips for Basil in Gonzales County

Direct sow Basil outdoors after February 28 in Gonzales County when soil has warmed and frost danger has passed.

With summer highs reaching 97ยฐF in Gonzales County, provide afternoon shade for Basil and water deeply in the morning.

General growing tips

Start seeds indoors or direct sow after last frost. Pinch flower buds to extend leaf production. Harvest leaves from the top down, cutting just above a leaf pair.

Recommended Basil Varieties for Gonzales County

Downy mildew-resistant basil for your humid climate

Prospera (DM-resistant) Amazel Eleonora

Companion Planting

Good Companions

Avoid Planting Near

  • Rue
  • Sage

Check more plant combinations with our Companion Planting Checker →

๐ŸŒพ Save Your Own Basil Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Let flower spikes dry brown on the plant.
Storage Store airtight; viable 5 years at 35ยฐF, under 45% humidity.

Isolate 150 ft between varieties. Different basil species can cross.

Frequently Asked Questions

When should I plant Basil in Gonzales County, TX?

Gonzales County is in Zone 8b with an average last frost of February 28. Plan your Basil planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Gonzales County, TX?

Gonzales County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 28 and first fall frost is November 28.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Gonzales County gardeners in Zone 8b 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 Gonzales County, TX. Local conditions may vary. Last updated: April 2026.