When to plant Fennel in Jefferson County, KY
Aim to plant Fennel in Jefferson County on or after April 14; the window stays open through May 5. Jefferson County's 206-day frost-free season gives you enough for a full main crop and a short fall succession.
When to Plant Fennel in Jefferson County, KY
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.
Jefferson County, Kentucky is in USDA Zone 7a. The average last spring frost is April 7 and the first fall frost is October 30, giving you a growing season of approximately 206 days.
At an elevation of 3,279 feet, Jefferson County receives approximately 43.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Fennel during the growing season.
Jefferson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Fennel Planting Timeline — Jefferson County, KY
Fennel Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 17 | Feb 17 – Mar 3 |
| Transplant Outdoors | April 21 | Apr 21 – May 5 |
| Direct Sow | April 14 | Apr 14 – May 5 |
| Harvest | June 23 | Jun 23 – Aug 4 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: N/A
🗺️ USDA Zone
Zone 7a
📆 Growing Season
206 days in Jefferson County
Growing Tips for Jefferson County
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
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Fennel in Other Locations
Frequently Asked Questions
When should I plant Fennel in Jefferson County, KY?
Jefferson County is in Zone 7a with an average last frost of April 7. Plan your Fennel planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jefferson County, KY?
Jefferson County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 7 and first fall frost is October 30.
When should I plant Fennel in Jefferson County, KY?
In Jefferson County, KY, plant Fennel after the last frost (around April 7) and before the first frost (around October 30). Best results when soil holds above 50°F.
What growing zone is Jefferson County, KY for Fennel?
Jefferson County sits in USDA Zone 7a. Fennel grows reliably in zones 4a through 10b, so it's a good fit here.
Can Fennel grow in Jefferson County's climate?
Yes — Fennel grows well in Jefferson County's temperate climate. Jefferson County averages a 206-day frost-free season, with last frost around April 7 and first frost around October 30.
Your Jefferson County Garden Planner — Free
A 22-page printable planner built for Jefferson County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.