When to Plant Fennel (herb) in Madison Parish, LA
Top priorities for Madison Parish, Louisiana gardeners in April
We've pulled the most time-sensitive tasks for Madison Parish, Louisiana this April and put them front and centre. Tackle them in order.
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Get fennel (herb) seeds going inside
You're about 28 weeks out from your last frost — the perfect window to get these germinating indoors.
May will be here before you know it — start on
- First harvests: fennel (herb)
Herb fennel is grown for its aromatic leaves, stalks, and seeds rather than a bulb. It has a strong anise flavor and its flowers attract beneficial insects.
Madison Parish, Louisiana is in USDA Zone 8a. The average last spring frost is March 9 and the first fall frost is November 14, giving you a growing season of approximately 250 days.
At an elevation of 62 feet, Madison Parish receives approximately 51.2 inches of rainfall annually with predominantly loam soil. Summer highs average 94°F, providing good warmth for Fennel (herb) during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel (herb) root diseases.
Madison Parish Soil Profile
Soil Type
Loam
Soil pH
6-7
Drainage
Well Drained
Plant Planting Risk Windows
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 Madison Parish
How your county's soil matches Fennel (herb)'s growing requirements.
Soil pH
Your soil pH (6.0–7.0) is within Fennel (herb)'s preferred range (5.5–7.0).
Soil Texture
The loam soil in Madison Parish is excellent for Fennel (herb) — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.4%). Annual compost additions will help Fennel (herb).
How to Plant Fennel (herb)
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Fennel (herb)
Sow every 6.9 weeks. Last sowing by Aug 16 to harvest before frost.
For a dedicated fall crop, sow by Sep 05.
Plant Water Budget
Monthly Watering Guide for Fennel (herb)
Fennel (herb) 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 (herb) Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.1" | 0" | ❄️ Dormant |
| Feb | — | 4.1" | 0" | ❄️ Dormant |
| Mar | 4.3" | 5.2" | 0" | ✅ Rainfall sufficient |
| Apr | 4.3" | 3.6" | 0.7" | 💧 Light watering |
| May | 4.3" | 4.3" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 5.7" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 4" | 0.3" | 💧 Light watering |
| Oct | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Nov | 4.3" | 3.3" | 1" | 💧 Light watering |
| Dec | — | 4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Madison Parish). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Fennel (herb) 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.
Fennel (herb) Planting Timeline — Madison Parish, LA
Fennel (herb) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 2 | Feb 2 – Feb 16 |
| Transplant Outdoors | March 2 | Mar 2 – Mar 16 |
| Direct Sow | February 23 | Feb 23 – Mar 16 |
| Harvest | May 4 | May 4 – Jul 13 |
| Fall Sowing | September 5 | Sep 5 – Sep 19 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | Harvest |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: ideal
🗺️ USDA Zone
Zone 8a
📆 Growing Season
250 days in Madison Parish
Growing Tips for Fennel (herb) in Madison Parish
Direct sow Fennel (herb) outdoors after March 09 in Madison Parish when soil has warmed and frost danger has passed.
Common pests for Fennel (herb) in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.
General growing tips
Direct sow in spring or fall. Unlike Florence fennel, herb fennel does not form a bulb. Harvest fronds as needed and seeds when they turn brown. Self-sows readily.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Fennel (herb) in Other Locations
Frequently Asked Questions
When should I plant Fennel (herb) in Madison Parish, LA?
Madison Parish is in Zone 8a with an average last frost of March 9. Plan your Fennel (herb) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Madison Parish, LA?
Madison Parish, Louisiana is in USDA Hardiness Zone 8a. The average last spring frost is March 9 and first fall frost is November 14.
Your Madison Parish Garden Planner — Free
A 24-page printable planner built for Madison Parish (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.