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When to Plant Basil in Winkler 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.

Winkler County, Texas is in USDA Zone 7b. The average last spring frost is March 25 and the first fall frost is November 10, giving you a growing season of approximately 230 days.

At an elevation of 1,153 feet, Winkler County receives approximately 51.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91ยฐF, providing good warmth for Basil during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Basil will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Basil root diseases.

Winkler County, TX (Zone 7b) Long season
230 days
Last Spring Frost March 25
230 growing days
First Fall Frost November 10

Winkler County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.5-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (93 days to spare)
Start indoors: Jan 25 Transplant: Mar 29 🍅 Harvest: May 24 – Jul 26
Recommended (50%) ✓ Fits season (97 days to spare)
Start indoors: Feb 4 Transplant: Apr 8 🍅 Harvest: Jun 3 – Aug 5
Safe Start (90%) ✓ Fits season (90 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Jun 27 – Aug 29

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 Winkler County

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

Soil pH

Your soil pH (7.5โ€“8.2) is more alkaline than Basil prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Basil.

Organic Matter

Organic matter is low (1.0%). Add 2-3 inches of compost before planting Basil.

How to Plant Basil

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

Succession Planting Basil

5
successive plantings in your 230-day season

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

Plant Water Budget

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

Water stress score is 8/10 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€” 3.6" 0" โ„๏ธ Dormant
Feb โ€” 3.4" 0" โ„๏ธ Dormant
Mar 2.6" 3.3" 0" โœ… Rainfall sufficient
Apr 2.6" 1.5" 1.1" ๐Ÿ’ง Light watering
May 2.6" 1" 1.6" ๐Ÿšฟ Regular watering
Jun 2.6" 2" 0.6" ๐Ÿ’ง Light watering
Jul 2.6" 8.1" 0" โœ… Rainfall sufficient
Aug 2.6" 10.2" 0" โœ… Rainfall sufficient
Sep 2.6" 6.7" 0" โœ… Rainfall sufficient
Oct 2.6" 5" 0" โœ… Rainfall sufficient
Nov 2.6" 3.3" 0" โœ… Rainfall sufficient
Dec โ€” 3.2" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Winkler 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 ~1,141 GDD — county provides 4,197 GDD Excellent fit

Basil Planting Timeline โ€” Winkler County, TX

Basil Planting Calendar

Activity When Date Range
Start Indoors February 4 Feb 4 โ€“ Feb 18
Transplant Outdoors April 8 Apr 8 โ€“ Apr 22
Direct Sow April 1 Apr 1 โ€“ Apr 22
Harvest June 3 Jun 3 โ€“ Aug 5

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

Month-by-Month Timeline

MonthActivities
January โ€”
February Start Indoors
March โ€”
April Transplant Outdoors Direct Sow
May โ€”
June Harvest
July Harvest
August Harvest
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: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

230 days in Winkler County

Growing Tips for Basil in Winkler County

Direct sow Basil outdoors after March 25 in Winkler County when soil has warmed and frost danger has passed.

Sandy soil in Winkler County dries quickly โ€” mulch Basil with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Winkler 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 Winkler County, TX?

Winkler County is in Zone 7b with an average last frost of March 25. Plan your Basil planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Winkler County, TX?

Winkler County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 25 and first fall frost is November 10.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Winkler County gardeners in Zone 7b 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 Winkler County, TX. Local conditions may vary. Last updated: April 2026.