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When to Plant Borage in West Baton Rouge Parish, LA

West Baton Rouge Parish, Louisiana Zone 9a May

Your May game plan for West Baton Rouge Parish, Louisiana

May is a pivotal month for West Baton Rouge Parish, Louisiana gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost February 14
Avg. first frost December 5
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Harvest borage as they ripen

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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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.

West Baton Rouge Parish, Louisiana is in USDA Zone 9a. The average last spring frost is February 14 and the first fall frost is December 5, giving you a growing season of approximately 294 days.

At an elevation of 411 feet, West Baton Rouge Parish receives approximately 57.9 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 96°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.

West Baton Rouge Parish, LA (Zone 9a) Year-round
294 days
Last Spring Frost February 14
294 growing days
First Fall Frost December 5

West Baton Rouge Parish Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (197 days to spare)
Start indoors: Jan 8 Transplant: Jan 29 🍅 Harvest: Mar 26 – May 14
Recommended (50%) ✓ Fits season (196 days to spare)
Start indoors: Jan 17 Transplant: Feb 7 🍅 Harvest: Apr 4 – May 23
Safe Start (90%) ✓ Fits season (186 days to spare)
Start indoors: Feb 11 Transplant: Mar 4 🍅 Harvest: Apr 29 – Jun 17

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 West Baton Rouge Parish

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

Soil pH

Your soil pH (5.0–6.1) is more acidic than Borage prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in West Baton Rouge Parish warms quickly in spring but drains fast. Borage will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Borage prefers dry conditions but your soil drains poorly. Use raised beds or mounded rows to prevent root rot.

Organic Matter

Organic matter is moderate (2.0%). Annual compost additions will help 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

7
successive plantings in your 294-day season

Sow every 5.7 weeks. Last sowing by Oct 06 to harvest before frost.

For a dedicated fall crop, sow by Oct 10.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.8″/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 4.8" 0" ❄️ Dormant
Feb 2.2" 4.3" 0" ✅ Rainfall sufficient
Mar 2.2" 5.6" 0" ✅ Rainfall sufficient
Apr 2.2" 4.5" 0" ✅ Rainfall sufficient
May 2.2" 4.9" 0" ✅ Rainfall sufficient
Jun 2.2" 5.2" 0" ✅ Rainfall sufficient
Jul 2.2" 6.4" 0" ✅ Rainfall sufficient
Aug 2.2" 5.4" 0" ✅ Rainfall sufficient
Sep 2.2" 4.3" 0" ✅ Rainfall sufficient
Oct 2.2" 3.6" 0" ✅ Rainfall sufficient
Nov 2.2" 4.8" 0" ✅ Rainfall sufficient
Dec 2.2" 4.1" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in West Baton Rouge Parish). 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 ~1,210 GDD — county provides 6,490 GDD Excellent fit

Borage Planting Timeline — West Baton Rouge Parish, LA

Borage Planting Calendar

Activity When Date Range
Start Indoors January 17 Jan 17 – Jan 31
Transplant Outdoors February 7 Feb 7 – Feb 21
Direct Sow January 24 Jan 24 – Feb 14
Harvest April 4 Apr 4 – May 23
Fall Sowing October 10 Oct 10 – Oct 24

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 9a

📆 Growing Season

294 days in West Baton Rouge Parish

Growing Tips for Borage in West Baton Rouge Parish

Direct sow Borage outdoors after February 14 in West Baton Rouge Parish when soil has warmed and frost danger has passed.

Sandy soil in West Baton Rouge Parish 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 96°F in West Baton Rouge Parish, provide afternoon shade for Borage and water deeply in the morning.

With 58" of annual rainfall in West Baton Rouge Parish, 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 West Baton Rouge Parish, LA?

West Baton Rouge Parish is in Zone 9a with an average last frost of February 14. Plan your Borage planting based on this frost date — see the calendar above for exact timing.

What planting zone is West Baton Rouge Parish, LA?

West Baton Rouge Parish, Louisiana is in USDA Hardiness Zone 9a. The average last spring frost is February 14 and first fall frost is December 5.

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Your West Baton Rouge Parish Garden Planner — Free

A 24-page printable planner built for West Baton Rouge Parish (Zone 9a). 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 West Baton Rouge Parish, LA. 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.