Blog

When to Plant Fennel in Bradford County, FL

Bradford County, Florida Zone 9a May

May in Bradford County, Florida — your action list

Here's what deserves your attention in Bradford County, Florida this month. Everything below is tailored to Zone 9a and timed around your local frost dates.

Avg. last frost March 1
Avg. first frost November 28
Soil temp (4") 76°F
Watering Moderate
Pest pressure High
Daylight 13.5 hrs
  1. Pick fennel

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

June prep starts now
  • First harvests: fennel

Instant PDF download. No spam, unsubscribe any time.

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.

Bradford County, Florida is in USDA Zone 9a. The average last spring frost is March 1 and the first fall frost is November 28, giving you a growing season of approximately 272 days.

At an elevation of 297 feet, Bradford County receives approximately 51.9 inches of rainfall annually with predominantly sand soil. Summer highs average 98°F, so Fennel may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Fennel will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Fennel root diseases.

Bradford County, FL (Zone 9a) Year-round
272 days
Last Spring Frost March 1
272 growing days
First Fall Frost November 28
Share this guide:

Bradford County Soil Profile

Soil Type

Sand

Soil pH

4.9-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (167 days to spare)
Start indoors: Jan 3 Transplant: Feb 21 🍅 Harvest: Apr 25 – Jun 6
Recommended (50%) ✓ Fits season (160 days to spare)
Start indoors: Jan 18 Transplant: Mar 8 🍅 Harvest: May 10 – Jun 21
Safe Start (90%) ✓ Fits season (161 days to spare)
Start indoors: Feb 8 Transplant: Mar 29 🍅 Harvest: May 31 – Jul 12

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 Bradford County

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

Soil pH

Your soil pH (4.9–6.1) overlaps with Fennel's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Fennel.

Organic Matter

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

How to Plant Fennel

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

Succession Planting Fennel

5
successive plantings in your 272-day season

Sow every 6.9 weeks. Last sowing by Aug 30 to harvest before frost.

Plant Water Budget

Plant needs
0.6″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 2.3" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 2.6" 3.3" 0" ✅ Rainfall sufficient
Apr 2.6" 2.6" 0" ✅ Rainfall sufficient
May 2.6" 3.2" 0" ✅ Rainfall sufficient
Jun 2.6" 6.9" 0" ✅ Rainfall sufficient
Jul 2.6" 8.7" 0" ✅ Rainfall sufficient
Aug 2.6" 7.1" 0" ✅ Rainfall sufficient
Sep 2.6" 6.9" 0" ✅ Rainfall sufficient
Oct 2.6" 4" 0" ✅ Rainfall sufficient
Nov 2.6" 2.1" 0.5" 💧 Light watering
Dec 2.2" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Bradford 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 needs ~1,762 GDD — county provides 6,392 GDD Excellent fit

Fennel Planting Timeline — Bradford County, FL

Fennel Planting Calendar

Activity When Date Range
Start Indoors January 18 Jan 18 – Feb 1
Transplant Outdoors March 8 Mar 8 – Mar 22
Direct Sow March 1 Mar 1 – Mar 22
Harvest May 10 May 10 – Jun 21

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors
March Transplant Outdoors Direct Sow
April
May Harvest
June Harvest
July
August
September
October
November
December
Share this guide:

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: acceptable

🗺️ USDA Zone

Zone 9a

📆 Growing Season

272 days in Bradford County

Growing Tips for Fennel in Bradford County

Direct sow Fennel outdoors after March 01 in Bradford County when soil has warmed and frost danger has passed.

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

With summer highs reaching 98°F in Bradford County, provide afternoon shade for Fennel and water deeply in the morning.

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

Avoid Planting Near

  • Tomatoes
  • Peppers
  • Beans

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Fennel in Bradford County, FL?

Bradford County is in Zone 9a with an average last frost of March 1. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bradford County, FL?

Bradford County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 1 and first fall frost is November 28.

🌱

Your Bradford County Garden Planner — Free

A 24-page printable planner built for Bradford 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Bradford County, FL. 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.