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When to Plant Borage in Limestone County, TX

Limestone County, Texas Zone 8b May

May in Limestone County, Texas — your action list

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

Avg. last frost March 12
Avg. first frost November 14
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Start harvesting borage

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

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  • First harvests: borage

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Borage is a self-seeding annual herb with star-shaped blue flowers that attract pollinators. Its leaves have a cucumber-like flavor and the flowers are edible.

Limestone County, Texas is in USDA Zone 8b. The average last spring frost is March 12 and the first fall frost is November 14, giving you a growing season of approximately 247 days.

At an elevation of 214 feet, Limestone County receives approximately 69.7 inches of rainfall annually with predominantly clay soil. Summer highs average 93°F, providing good warmth for Borage during the growing season. Clay soil retains moisture well for Borage, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Borage root diseases.

Limestone County, TX (Zone 8b) Long season
247 days
Last Spring Frost March 12
247 growing days
First Fall Frost November 14

Limestone County Soil Profile

Soil Type

Clay

Soil pH

7.1-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (151 days to spare)
Start indoors: Jan 29 Transplant: Feb 26 🍅 Harvest: Apr 23 – Jun 11
Recommended (50%) ✓ Fits season (149 days to spare)
Start indoors: Feb 5 Transplant: Mar 5 🍅 Harvest: Apr 30 – Jun 18
Safe Start (90%) ✓ Fits season (140 days to spare)
Start indoors: Mar 4 Transplant: Apr 1 🍅 Harvest: May 27 – Jul 15

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 Limestone County

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

Soil pH

Your soil pH (7.1–7.7) is more alkaline than Borage prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Heavy clay soil (45% clay) in Limestone County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Borage.

How to Plant Borage

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Borage

5
successive plantings in your 247-day season

Sow every 5.7 weeks. Last sowing by Sep 15 to harvest before frost.

For a dedicated fall crop, sow by Sep 05.

Plant Water Budget

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

Monthly Watering Guide for Borage

Borage needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Borage Needs Rainfall You Supplement Action
Jan 1.8" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 2.2" 4.9" 0" ✅ Rainfall sufficient
Apr 2.2" 6.9" 0" ✅ Rainfall sufficient
May 2.2" 10.6" 0" ✅ Rainfall sufficient
Jun 2.2" 12.1" 0" ✅ Rainfall sufficient
Jul 2.2" 8.9" 0" ✅ Rainfall sufficient
Aug 2.2" 8.2" 0" ✅ Rainfall sufficient
Sep 2.2" 6.2" 0" ✅ Rainfall sufficient
Oct 2.2" 3.8" 0" ✅ Rainfall sufficient
Nov 2.2" 2" 0.2" 💧 Light watering
Dec 1.8" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Limestone County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Borage 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.

Borage needs ~1,086 GDD — county provides 4,878 GDD Excellent fit

Borage Planting Timeline — Limestone County, TX

Borage Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 – Feb 19
Transplant Outdoors March 5 Mar 5 – Mar 19
Direct Sow February 26 Feb 26 – Mar 19
Harvest April 30 Apr 30 – Jun 18
Fall Sowing September 5 Sep 5 – Sep 19

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

50–60 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

247 days in Limestone County

Growing Tips for Borage in Limestone County

Direct sow Borage outdoors after March 12 in Limestone County when soil has warmed and frost danger has passed.

With Limestone County's clay soil (45% clay), work in 3-4 inches of compost before planting Borage. Avoid tilling when soil is wet to prevent compaction.

With 70" of annual rainfall in Limestone County, ensure good drainage for Borage — excess moisture can promote root rot and fungal diseases.

General growing tips

Direct sow in spring as borage does not transplant well. Allow some plants to go to seed for next year. Young leaves are best; older leaves become bristly.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Borage in Limestone County, TX?

Limestone County is in Zone 8b with an average last frost of March 12. Plan your Borage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Limestone County, TX?

Limestone County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 12 and first fall frost is November 14.

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Your Limestone County Garden Planner — Free

A 24-page printable planner built for Limestone 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 Limestone 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.