When to Plant Fennel in Carroll County, MS
This month in Carroll County, Mississippi
If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.
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Begin indoor sowing: fennel
These need a head start before your last frost (March 17). Sow into cells now so you're ready to transplant in a few weeks.
June will be here before you know it — start on
- First harvests: fennel
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.
Carroll County, Mississippi is in USDA Zone 8a. The average last spring frost is March 17 and the first fall frost is November 9, giving you a growing season of approximately 237 days.
At an elevation of 153 feet, Carroll County receives approximately 49.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Fennel during the growing season. Clay soil retains moisture well for Fennel, but amend with compost to improve drainage and prevent root rot.
Carroll County Soil Profile
Soil Type
Clay Loam
Soil pH
5.5-6.7
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 Carroll County
How your county's soil matches Fennel's growing requirements.
Soil pH
Your soil pH (5.5–6.7) is within Fennel's preferred range (5.5–7.0).
Soil Texture
The clay loam soil in Carroll County is excellent for Fennel — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Fennel.
How to Plant Fennel
Succession Planting Fennel
Sow every 6.9 weeks. Last sowing by Aug 11 to harvest before frost.
Plant Water Budget
Monthly Watering Guide for Fennel
Fennel needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.
| Month | Fennel Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.2" | 0" | ❄️ Dormant |
| Feb | — | 4" | 0" | ❄️ Dormant |
| Mar | 2.6" | 5" | 0" | ✅ Rainfall sufficient |
| Apr | 2.6" | 3.7" | 0" | ✅ Rainfall sufficient |
| May | 2.6" | 4.4" | 0" | ✅ Rainfall sufficient |
| Jun | 2.6" | 4.1" | 0" | ✅ Rainfall sufficient |
| Jul | 2.6" | 4.8" | 0" | ✅ Rainfall sufficient |
| Aug | 2.6" | 4.7" | 0" | ✅ Rainfall sufficient |
| Sep | 2.6" | 3.4" | 0" | ✅ Rainfall sufficient |
| Oct | 2.6" | 3.5" | 0" | ✅ Rainfall sufficient |
| Nov | 2.6" | 3.8" | 0" | ✅ Rainfall sufficient |
| Dec | — | 3.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Carroll County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Fennel 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 Planting Timeline — Carroll County, MS
Fennel Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 27 | Jan 27 – Feb 10 |
| Transplant Outdoors | March 31 | Mar 31 – Apr 14 |
| Direct Sow | March 24 | Mar 24 – Apr 14 |
| Harvest | June 2 | Jun 2 – Jul 14 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | — |
| June | Harvest |
| July | Harvest |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.6"/week · Natural rainfall sufficient
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: ideal
🗺️ USDA Zone
Zone 8a
📆 Growing Season
237 days in Carroll County
Growing Tips for Fennel in Carroll County
Direct sow Fennel outdoors after March 17 in Carroll County when soil has warmed and frost danger has passed.
With Carroll County's clay soil (31% clay), work in 3-4 inches of compost before planting Fennel. Avoid tilling when soil is wet to prevent compaction.
Common pests for Fennel 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 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
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Check more plant combinations with our Companion Planting Checker →
Fennel in Other Locations
Frequently Asked Questions
When should I plant Fennel in Carroll County, MS?
Carroll County is in Zone 8a with an average last frost of March 17. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.
What planting zone is Carroll County, MS?
Carroll County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 17 and first fall frost is November 9.
Your Carroll County Garden Planner — Free
A 24-page printable planner built for Carroll County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.