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When to plant Fennel (herb) in Dixie County, FL

Aim to plant Fennel (herb) in Dixie County on or after February 18; the window stays open through March 11. Dixie County's 257-day frost-free season gives you plenty of room for a spring and fall cycle. A second sowing from September 28 to October 12 extends the harvest into fall.

When to Plant Fennel (herb) in Dixie County, FL

Dixie County, Florida Zone 9a August

This month in Dixie County, Florida

If you only do a handful of things in the garden this August, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 11
Avg. first frost November 23
Soil temp (4") 94°F
Watering Low
Pest pressure High
Daylight 13.1 hrs

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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.

Dixie County, Florida is in USDA Zone 9a. The average last spring frost is March 11 and the first fall frost is November 23, giving you a growing season of approximately 257 days.

At an elevation of 428 feet, Dixie County receives approximately 55.1 inches of rainfall annually with predominantly sand soil. Summer highs average 101°F, so Fennel (herb) may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Fennel (herb) will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel (herb) root diseases.

Dixie County, FL (Zone 9a) Long season
257 days
Last Spring Frost March 11
257 growing days
First Fall Frost November 23

Dixie County Soil Profile

Soil Type

Sand

Soil pH

4.8-6

Drainage

Well Drained

Fennel (herb) Planting Risk Windows

Early Start (70% safe) ✓ Fits season (127 days to spare)
Start indoors: Feb 5 Transplant: Feb 26 🍅 Harvest: Apr 30 – Jul 9
Recommended (50%) ✓ Fits season (131 days to spare)
Start indoors: Feb 11 Transplant: Mar 4 🍅 Harvest: May 6 – Jul 15
Safe Start (90%) ✓ Fits season (137 days to spare)
Start indoors: Feb 27 Transplant: Mar 20 🍅 Harvest: May 22 – Jul 31

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 Dixie County

How your county's soil matches Fennel (herb)'s growing requirements.

Soil pH

Your soil pH (4.8–6.0) is more acidic than Fennel (herb) prefers (5.5–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Dixie County warms quickly in spring but drains fast. Fennel (herb) will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Fennel (herb).

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Fennel (herb).

How to Plant Fennel (herb)

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Fennel (herb)

5
successive plantings in your 257-day season

Sow every 6.9 weeks. Last sowing by Aug 25 to harvest before frost.

For a dedicated fall crop, sow by Sep 28.

Fennel (herb) Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,097 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 2.3" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 4.3" 3.5" 0.8" 💧 Light watering
Apr 4.3" 2.6" 1.7" 💧 Light watering
May 4.3" 3.3" 1" 💧 Light watering
Jun 4.3" 7.2" 0" ✅ Rainfall sufficient
Jul 4.3" 8.7" 0" ✅ Rainfall sufficient
Aug 4.3" 7.2" 0" ✅ Rainfall sufficient
Sep 4.3" 8.3" 0" ✅ Rainfall sufficient
Oct 4.3" 4.7" 0" ✅ Rainfall sufficient
Nov 4.3" 2" 2.3" 🚿 Regular watering
Dec 2.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Dixie County). 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) needs ~1,931 GDD — county provides 6,617 GDD Excellent fit

Fennel (herb) Planting Timeline — Dixie County, FL

Fennel (herb) Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 – Feb 25
Transplant Outdoors March 4 Mar 4 – Mar 18
Direct Sow February 18 Feb 18 – Mar 11
Harvest May 6 May 6 – Jul 15
Fall Sowing September 28 Sep 28 – Oct 12

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

257 days in Dixie County

Growing Tips for Fennel (herb) in Dixie County

Direct sow Fennel (herb) outdoors after March 11 in Dixie County when soil has warmed and frost danger has passed.

Sandy soil in Dixie County dries quickly — mulch Fennel (herb) with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 101°F in Dixie County, provide afternoon shade for Fennel (herb) and water deeply in the morning.

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

  • Tomatoes
  • Peppers
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fennel (herb) in Dixie County, FL?

Dixie County is in Zone 9a with an average last frost of March 11. Plan your Fennel (herb) planting based on this frost date — see the calendar above for exact timing.

What planting zone is Dixie County, FL?

Dixie County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 11 and first fall frost is November 23.

When should I plant Fennel (herb) in Dixie County, FL?

In Dixie County, FL, plant Fennel (herb) after the last frost (around March 11) and before the first frost (around November 23). Best results when soil holds above 50°F.

What growing zone is Dixie County, FL for Fennel (herb)?

Dixie County sits in USDA Zone 9a. Fennel (herb) grows reliably in zones 4a through 10b, so it's a good fit here.

Can Fennel (herb) grow in Dixie County's climate?

Yes — Fennel (herb) grows well in Dixie County's temperate climate. Dixie County averages a 257-day frost-free season, with last frost around March 11 and first frost around November 23.

🌱

Your Dixie County Garden Planner — Free

A 22-page printable planner built for Dixie County (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 Dixie County, FL. Local conditions may vary. Last updated: August 2026.

Sources & credits

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