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When to Plant Basil in Val Verde County, TX

Val Verde County, Texas Zone 8b May

May to-do list for Val Verde County, Texas

Here's what deserves your attention in Val Verde County, Texas this month. Everything below is tailored to Zone 8b and timed around your local frost dates.

Avg. last frost February 17
Avg. first frost December 7
Soil temp (4") 62°F
Watering Critical
Pest pressure High
Daylight 13.5 hrs
  1. Pick basil

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

To set up a strong June, finish these tasks
  • First harvests: basil

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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.

Val Verde County, Texas is in USDA Zone 8b. The average last spring frost is February 17 and the first fall frost is December 7, giving you a growing season of approximately 293 days.

At an elevation of 3,979 feet, Val Verde County receives approximately 53.1 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 98°F, so Basil may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — 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.

Val Verde County, TX (Zone 8b) Year-round
293 days
Last Spring Frost February 17
293 growing days
First Fall Frost December 7

Val Verde County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.7-8.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (159 days to spare)
Start indoors: Dec 25 Transplant: Feb 26 🍅 Harvest: Apr 23 – Jun 25
Recommended (50%) ✓ Fits season (160 days to spare)
Start indoors: Dec 30 Transplant: Mar 3 🍅 Harvest: Apr 28 – Jun 30
Safe Start (90%) ✓ Fits season (154 days to spare)
Start indoors: Jan 19 Transplant: Mar 23 🍅 Harvest: May 18 – 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 Val Verde County

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

Soil pH

Your soil pH (7.7–8.1) is more alkaline than Basil prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (0.9%). 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

7
successive plantings in your 293-day season

Sow every 5.7 weeks. Last sowing by Sep 23 to harvest before frost.

Plant Water Budget

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

Water stress score is 8/10 — 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 3.8" 0" ❄️ Dormant
Feb 2.6" 3.1" 0" ✅ Rainfall sufficient
Mar 2.6" 2.8" 0" ✅ Rainfall sufficient
Apr 2.6" 1.7" 0.9" 💧 Light watering
May 2.6" 1.1" 1.5" 🚿 Regular watering
Jun 2.6" 1.7" 0.9" 💧 Light watering
Jul 2.6" 9.6" 0" ✅ Rainfall sufficient
Aug 2.6" 11.5" 0" ✅ Rainfall sufficient
Sep 2.6" 6.2" 0" ✅ Rainfall sufficient
Oct 2.6" 4.3" 0" ✅ Rainfall sufficient
Nov 2.6" 3.3" 0" ✅ Rainfall sufficient
Dec 2.6" 4" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in Val Verde County). Supplement amounts are based on average rainfall — 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" — 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.

Basil needs ~1,469 GDD — county provides 6,909 GDD Excellent fit

Basil Planting Timeline — Val Verde County, TX

Basil Planting Calendar

Activity When Date Range
Start Indoors December 30 Dec 30 – Jan 13
Transplant Outdoors March 3 Mar 3 – Mar 17
Direct Sow February 24 Feb 24 – Mar 17
Harvest April 28 Apr 28 – Jun 30

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

50–75 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

293 days in Val Verde County

Growing Tips for Basil in Val Verde County

Direct sow Basil outdoors after February 17 in Val Verde County when soil has warmed and frost danger has passed.

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

With summer highs reaching 98°F in Val Verde 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 Val Verde 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 →

🌾 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 35°F, under 45% humidity.

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

Frequently Asked Questions

When should I plant Basil in Val Verde County, TX?

Val Verde County is in Zone 8b with an average last frost of February 17. Plan your Basil planting based on this frost date — see the calendar above for exact timing.

What planting zone is Val Verde County, TX?

Val Verde County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is February 17 and first fall frost is December 7.

🌱

Your Val Verde County Garden Planner — Free

A 24-page printable planner built for Val Verde County (Zone 8b). 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 Val Verde 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.