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When to Plant Carrots in Bienville Parish, LA

Bienville Parish, Louisiana Zone 8b May

May in Bienville Parish, Louisiana — your action list

Here's what deserves your attention in Bienville Parish, Louisiana this month. Everything below is tailored to Zone 8b and timed around your local frost dates.

Avg. last frost March 16
Avg. first frost November 12
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Basket week: carrots

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

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

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Carrots are a popular root vegetable available in orange, purple, white, and yellow varieties. They are rich in beta-carotene and have a sweet, earthy flavor.

Bienville Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 16 and the first fall frost is November 12, giving you a growing season of approximately 241 days.

At an elevation of 438 feet, Bienville Parish receives approximately 56 inches of rainfall annually with predominantly loam soil. Summer highs average 94°F, providing good warmth for Carrots during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Carrots root diseases.

Bienville Parish, LA (Zone 8b) Long season
241 days
Last Spring Frost March 16
241 growing days
First Fall Frost November 12
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Bienville Parish Soil Profile

Soil Type

Loam

Soil pH

5.9-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (139 days to spare)
Transplant: Mar 10 🍅 Harvest: May 12 – Jun 16
Recommended (50%) ✓ Fits season (143 days to spare)
Transplant: Mar 16 🍅 Harvest: May 18 – Jun 22
Safe Start (90%) ✓ Fits season (134 days to spare)
Transplant: Apr 11 🍅 Harvest: Jun 13 – Jul 18

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 Bienville Parish

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

Soil pH

Your soil pH (5.9–6.9) overlaps with Carrots's range (6.0–6.8), though not a perfect match.

Soil Texture

The loam soil in Bienville Parish is excellent for Carrots — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Carrots.

Organic Matter

Organic matter is moderate (2.9%). Annual compost additions will help Carrots.

How to Plant Carrots

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

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

Succession Planting Carrots

4
successive plantings in your 241-day season

Sow every 6.9 weeks. Last sowing by Aug 24 to harvest before frost.

For a dedicated fall crop, sow by Sep 03.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 137 gal / 100 sq ft

Monthly Watering Guide for Carrots

Carrots needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Carrots Needs Rainfall You Supplement Action
Jan 4.5" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 3.5" 5.3" 0" ✅ Rainfall sufficient
Apr 3.5" 3.8" 0" ✅ Rainfall sufficient
May 3.5" 4.8" 0" ✅ Rainfall sufficient
Jun 3.5" 4.8" 0" ✅ Rainfall sufficient
Jul 3.5" 6.5" 0" ✅ Rainfall sufficient
Aug 3.5" 4.8" 0" ✅ Rainfall sufficient
Sep 3.5" 4.3" 0" ✅ Rainfall sufficient
Oct 3.5" 4.1" 0" ✅ Rainfall sufficient
Nov 3.5" 3.9" 0" ✅ Rainfall sufficient
Dec 5" 0" ❄️ Dormant

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

Carrots 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.

Carrots needs ~1,435 GDD — county provides 4,940 GDD Excellent fit

Carrots Planting Timeline — Bienville Parish, LA

Carrots Planting Calendar

Activity When Date Range
Direct Sow March 2 Mar 2 – Mar 23
Harvest May 4 May 4 – Jun 8
Fall Sowing September 3 Sep 3 – Sep 17

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April
May Harvest
June Harvest
July
August
September Fall Sowing
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Only during dry spells

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–6.8 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

241 days in Bienville Parish

Growing Tips for Carrots in Bienville Parish

Direct sow Carrots outdoors after March 16 in Bienville Parish when soil has warmed and frost danger has passed.

Common pests for Carrots in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Sow seeds directly in loose, stone-free soil for straight roots. Keep soil moist until germination which can take 2-3 weeks. Thin seedlings to 2 inches apart.

Companion Planting

Good Companions

Avoid Planting Near

  • Dill
  • Parsnip

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Carrots Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Replant roots for 2nd year flowers. Harvest umbels when brown.
Storage Store airtight; viable 3 years at 35°F, under 50% humidity.

Isolate 1/2 mile from Queen Anne's Lace (wild carrot). Biennial — requires two seasons.

Frequently Asked Questions

When should I plant Carrots in Bienville Parish, LA?

Bienville Parish is in Zone 8b with an average last frost of March 16. Plan your Carrots planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bienville Parish, LA?

Bienville Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 16 and first fall frost is November 12.

🌱

Your Bienville Parish Garden Planner — Free

A 24-page printable planner built for Bienville Parish (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 Bienville 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.