When to plant Fennel (herb) in Brevard County, FL
For Fennel (herb) in Brevard County, the safe spring window opens around December 29 and closes around January 19. Last expected frost is January 19, first fall frost December 20, giving a 336-day growing season. A second sowing from October 25 to November 8 extends the harvest into fall.
When to Plant Fennel (herb) in Brevard County, FL
Brevard County, Florida gardeners: here's your July plan
If you only do a handful of things in the garden this July, make it these. They're sequenced around your zone's frost timing.
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Plan the fall garden
Make a planting map for August. Tomatoes, peppers, brassicas, lettuce, root crops all go in over the next 8 weeks. Soil amendments and irrigation prep happen now.
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Keep heat-survivor crops productive
Daily harvest of okra and southern peas keeps plants producing. Let pods over-mature and the plant stops setting new fruit.
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Watch for hurricane prep season
August-October is hurricane season. Stake young trees, secure rain barrels, and plan how to protect tender transplants from high winds.
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.
Brevard County, Florida is in USDA Zone 10a. The average last spring frost is January 19 and the first fall frost is December 20, giving you a growing season of approximately 335 days.
At an elevation of 491 feet, Brevard County receives approximately 52.7 inches of rainfall annually with predominantly sand soil. Summer highs average 104°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.
Brevard County Soil Profile
Soil Type
Sand
Soil pH
4.8-5.9
Drainage
Well Drained
Fennel (herb) 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 Brevard County
How your county's soil matches Fennel (herb)'s growing requirements.
Soil pH
Your soil pH (4.8–5.9) is more acidic than Fennel (herb) prefers (5.5–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Brevard 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 (1.6%). Add 2-3 inches of compost before planting Fennel (herb).
How to Plant Fennel (herb)
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Fennel (herb)
Sow every 6.9 weeks. Last sowing by Sep 21 to harvest before frost.
For a dedicated fall crop, sow by Oct 25.
Fennel (herb) Water Budget
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 | 4.3" | 2.2" | 2.1" | 💧 Light watering |
| Feb | 4.3" | 3.1" | 1.2" | 💧 Light watering |
| Mar | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Apr | 4.3" | 2.5" | 1.8" | 💧 Light watering |
| May | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Jun | 4.3" | 7.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 6.6" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 6.8" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 7.6" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 5" | 0" | ✅ Rainfall sufficient |
| Nov | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Dec | 4.3" | 2.3" | 2" | 💧 Light watering |
Water needs are for active growing months only (Jan–Dec in Brevard 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) Planting Timeline — Brevard County, FL
Fennel (herb) Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 22 | Dec 22 – Jan 5 |
| Transplant Outdoors | January 12 | Jan 12 – Jan 26 |
| Direct Sow | December 29 | Dec 29 – Jan 19 |
| Harvest | March 16 | Mar 16 – May 25 |
| Fall Sowing | October 25 | Oct 25 – Nov 8 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Transplant Outdoors Direct Sow |
| February | — |
| March | Harvest |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | Fall Sowing |
| December | Start Indoors Direct Sow |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 10a
📆 Growing Season
335 days in Brevard County
Growing Tips for Fennel (herb) in Brevard County
Direct sow Fennel (herb) outdoors after January 19 in Brevard County when soil has warmed and frost danger has passed.
Sandy soil in Brevard 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 104°F in Brevard 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
Check more plant combinations with our Companion Planting Checker →
Fennel (herb) in Other Locations
Frequently Asked Questions
When should I plant Fennel (herb) in Brevard County, FL?
Brevard County is in Zone 10a with an average last frost of January 19. Plan your Fennel (herb) planting based on this frost date — see the calendar above for exact timing.
What planting zone is Brevard County, FL?
Brevard County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is January 19 and first fall frost is December 20.
When should I plant Fennel (herb) in Brevard County, FL?
In Brevard County, FL, plant Fennel (herb) after the last frost (around January 19) and before the first frost (around December 20). Best results when soil holds above 50°F.
What growing zone is Brevard County, FL for Fennel (herb)?
Brevard County sits in USDA Zone 10a. Fennel (herb) grows reliably in zones 4a through 10b, so it's a good fit here.
Can Fennel (herb) grow in Brevard County's climate?
Yes — Fennel (herb) grows well in Brevard County's temperate climate. Brevard County averages a 336-day frost-free season, with last frost around January 19 and first frost around December 20.
Your Brevard County Garden Planner — Free
A 22-page printable planner built for Brevard County (Zone 10a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.