Blog

When to Plant Borage in Kinney County, TX

Kinney County, Texas Zone 9a June

This month in Kinney County, Texas

Each item below is timed to Kinney County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost February 22
Avg. first frost November 30
Soil temp (4") 84°F
Watering High
Pest pressure High
Daylight 13.9 hrs

Instant PDF download. No spam, unsubscribe any time.

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.

Kinney County, Texas is in USDA Zone 9a. The average last spring frost is February 22 and the first fall frost is November 30, giving you a growing season of approximately 281 days.

At an elevation of 1,375 feet, Kinney County receives approximately 52.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 101°F, so Borage may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Borage will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Borage root diseases.

Kinney County, TX (Zone 9a) Year-round
281 days
Last Spring Frost February 22
281 growing days
First Fall Frost November 30
Share this guide:

Kinney County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.6

Drainage

Well Drained

Borage Planting Risk Windows

Early Start (70% safe) ✓ Fits season (187 days to spare)
Start indoors: Jan 16 Transplant: Feb 6 🍅 Harvest: Apr 3 – May 22
Recommended (50%) ✓ Fits season (183 days to spare)
Start indoors: Jan 25 Transplant: Feb 15 🍅 Harvest: Apr 12 – May 31
Safe Start (90%) ✓ Fits season (175 days to spare)
Start indoors: Feb 18 Transplant: Mar 11 🍅 Harvest: May 6 – Jun 24

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 Kinney County

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

Soil pH

Your soil pH (7.4–8.6) is more alkaline than Borage prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting Borage.

How to Plant Borage

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Borage

6
successive plantings in your 281-day season

Sow every 5.7 weeks. Last sowing by Oct 01 to harvest before frost.

For a dedicated fall crop, sow by Oct 05.

Borage Water Budget

Plant needs
0.5″/week
Rainfall provides
0.8″/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 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 3.4" 0" ❄️ Dormant
Feb 2.2" 3.3" 0" ✅ Rainfall sufficient
Mar 2.2" 3" 0" ✅ Rainfall sufficient
Apr 2.2" 1.7" 0.5" 💧 Light watering
May 2.2" 1.3" 0.9" 💧 Light watering
Jun 2.2" 2" 0.2" 💧 Light watering
Jul 2.2" 8.2" 0" ✅ Rainfall sufficient
Aug 2.2" 10.4" 0" ✅ Rainfall sufficient
Sep 2.2" 7.6" 0" ✅ Rainfall sufficient
Oct 2.2" 4" 0" ✅ Rainfall sufficient
Nov 2.2" 3.4" 0" ✅ Rainfall sufficient
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Feb–Nov in Kinney 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 ~1,416 GDD — county provides 7,261 GDD Excellent fit

Borage Planting Timeline — Kinney County, TX

Borage Planting Calendar

Activity When Date Range
Start Indoors January 25 Jan 25 – Feb 8
Transplant Outdoors February 15 Feb 15 – Mar 1
Direct Sow February 1 Feb 1 – Feb 22
Harvest April 12 Apr 12 – May 31
Fall Sowing October 5 Oct 5 – Oct 19

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

Month-by-Month Timeline

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

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 9a

📆 Growing Season

281 days in Kinney County

Growing Tips for Borage in Kinney County

Direct sow Borage outdoors after February 22 in Kinney County when soil has warmed and frost danger has passed.

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

With summer highs reaching 101°F in Kinney County, provide afternoon shade for Borage and water deeply in the morning.

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 Kinney County, TX?

Kinney County is in Zone 9a with an average last frost of February 22. Plan your Borage planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kinney County, TX?

Kinney County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is February 22 and first fall frost is November 30.

🌱

Your Kinney County Garden Planner — Free

A 22-page printable planner built for Kinney County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Kinney County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.