Blog

When to Plant Fennel in Catahoula Parish, LA

Florence fennel is grown for its swollen bulb-like stem base, which has a mild anise flavor. It is crisp raw in salads and sweet when roasted or braised.

Catahoula Parish, Louisiana is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 16, giving you a growing season of approximately 256 days.

At an elevation of 73 feet, Catahoula Parish receives approximately 56.1 inches of rainfall annually with predominantly loam soil. Summer highs average 91Β°F, providing good warmth for Fennel during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel root diseases.

Catahoula Parish, LA (Zone 8b) Long season
256 days
Last Spring Frost March 5
256 growing days
First Fall Frost November 16

Catahoula Parish Soil Profile

Soil Type

Loam

Soil pH

6.1-7.1

Drainage

Well Drained

Monthly Watering Guide for Fennel

Fennel needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Fennel Needs Rainfall You Supplement Action
Jan β€” 4.9" 0" ❄️ Dormant
Feb β€” 4.9" 0" ❄️ Dormant
Mar 4.3" 5.5" 0" βœ… Rainfall sufficient
Apr 4.3" 4.3" 0" βœ… Rainfall sufficient
May 4.3" 4.9" 0" βœ… Rainfall sufficient
Jun 4.3" 4.5" 0" βœ… Rainfall sufficient
Jul 4.3" 5.3" 0" βœ… Rainfall sufficient
Aug 4.3" 6.3" 0" βœ… Rainfall sufficient
Sep 4.3" 3.7" 0.6" πŸ’§ Light watering
Oct 4.3" 3.3" 1" πŸ’§ Light watering
Nov 4.3" 4" 0.3" πŸ’§ Light watering
Dec β€” 4.4" 0" ❄️ Dormant

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

Fennel Planting Timeline β€” Catahoula Parish, LA

Fennel Planting Calendar

Activity When Date Range
Start Indoors January 15 Jan 15 – Jan 29
Transplant Outdoors March 19 Mar 19 – Apr 2
Direct Sow March 12 Mar 12 – Apr 2
Harvest May 21 May 21 – Jul 2

Plant 1" deep Β· 15" apart Β· Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

60–90 days

πŸ§ͺ Soil pH

Needs 5.5–7 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 8b

πŸ“† Growing Season

256 days in Catahoula Parish

Growing Tips for Catahoula Parish

Direct sow in late summer for fall harvest to reduce bolting. Hill soil around bulbs as they enlarge. Harvest when bulbs are tennis-ball sized before they elongate.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Peppers
  • Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fennel in Catahoula Parish, LA?

Catahoula Parish is in Zone 8b with an average last frost of March 5. Plan your Fennel planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Catahoula Parish, LA?

Catahoula Parish, Louisiana is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 16.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Catahoula Parish gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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