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When to Plant Basil in Upshur County, TX

Upshur County, Texas Zone 8b May

This month in Upshur County, Texas

A quick May briefing for Upshur County, Texas gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 9
Avg. first frost November 17
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Harvest basil as they ripen

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

Looking ahead to June
  • 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.

Upshur County, Texas is in USDA Zone 8b. The average last spring frost is March 9 and the first fall frost is November 17, giving you a growing season of approximately 253 days.

At an elevation of 51 feet, Upshur County receives approximately 74 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95°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.

Upshur County, TX (Zone 8b) Long season
253 days
Last Spring Frost March 9
253 growing days
First Fall Frost November 17

Upshur County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.6-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (125 days to spare)
Start indoors: Jan 10 Transplant: Mar 14 🍅 Harvest: May 9 – Jul 11
Recommended (50%) ✓ Fits season (120 days to spare)
Start indoors: Jan 19 Transplant: Mar 23 🍅 Harvest: May 18 – Jul 20
Safe Start (90%) ✓ Fits season (114 days to spare)
Start indoors: Feb 8 Transplant: Apr 12 🍅 Harvest: Jun 7 – Aug 9

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 Upshur County

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

Soil pH

Your soil pH (5.6–6.4) overlaps with Basil's range (6.0–7.0), though not a perfect match.

Soil Texture

Sandy soil in Upshur 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 (1.9%). 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

6
successive plantings in your 253-day season

Sow every 5.7 weeks. Last sowing by Sep 03 to harvest before frost.

Plant Water Budget

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

Water stress score is 6/10 — 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 2.1" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 2.6" 5.3" 0" ✅ Rainfall sufficient
Apr 2.6" 7.9" 0" ✅ Rainfall sufficient
May 2.6" 10.3" 0" ✅ Rainfall sufficient
Jun 2.6" 10.4" 0" ✅ Rainfall sufficient
Jul 2.6" 11.1" 0" ✅ Rainfall sufficient
Aug 2.6" 8.5" 0" ✅ Rainfall sufficient
Sep 2.6" 6.3" 0" ✅ Rainfall sufficient
Oct 2.6" 5" 0" ✅ Rainfall sufficient
Nov 2.6" 2.4" 0.2" 💧 Light watering
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Upshur 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 ~1,328 GDD — county provides 5,376 GDD Excellent fit

Basil Planting Timeline — Upshur County, TX

Basil Planting Calendar

Activity When Date Range
Start Indoors January 19 Jan 19 – Feb 2
Transplant Outdoors March 23 Mar 23 – Apr 6
Direct Sow March 16 Mar 16 – Apr 6
Harvest May 18 May 18 – Jul 20

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

Month-by-Month Timeline

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

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: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

253 days in Upshur County

Growing Tips for Basil in Upshur County

Direct sow Basil outdoors after March 09 in Upshur County when soil has warmed and frost danger has passed.

Sandy soil in Upshur County dries quickly — 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 Upshur 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 Upshur County, TX?

Upshur County is in Zone 8b with an average last frost of March 9. Plan your Basil planting based on this frost date — see the calendar above for exact timing.

What planting zone is Upshur County, TX?

Upshur County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 9 and first fall frost is November 17.

🌱

Your Upshur County Garden Planner — Free

A 24-page printable planner built for Upshur 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 Upshur 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.