When to plant Hyssop in Harrison County, KY
Plant Hyssop in Harrison County during the brief April 23–May 7 window. With 193 frost-free days, fall plantings can't mature before October 26.
When to Plant Hyssop in Harrison County, KY
Hyssop is a semi-evergreen perennial herb with intense blue flower spikes that attract bees and butterflies. It has a minty, slightly bitter flavor used in liqueurs and teas.
Harrison County, Kentucky is in USDA Zone 6b. The average last spring frost is April 16 and the first fall frost is October 26, giving you a growing season of approximately 193 days.
At an elevation of 2,105 feet, Harrison County receives approximately 52.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Hyssop during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Hyssop root diseases.
Harrison County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Hyssop Planting Timeline — Harrison County, KY
Hyssop Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 23 | Apr 23 – May 7 |
| Harvest | July 2 | Jul 2 – Sep 3 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
70–90 days
🧪 Soil pH
Needs 6–8 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
193 days in Harrison County
Growing Tips for Harrison County
Start seeds indoors or direct sow in spring. Prune back in early spring to encourage bushy growth. Hyssop is drought-tolerant once established and thrives in poor soil.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Hyssop in Other Locations
Frequently Asked Questions
When should I plant Hyssop in Harrison County, KY?
Harrison County is in Zone 6b with an average last frost of April 16. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.
What planting zone is Harrison County, KY?
Harrison County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 16 and first fall frost is October 26.
When should I plant Hyssop in Harrison County, KY?
In Harrison County, KY, plant Hyssop after the last frost (around April 16) and before the first frost (around October 26). Best results when soil holds above 50°F.
What growing zone is Harrison County, KY for Hyssop?
Harrison County sits in USDA Zone 6b. Hyssop grows reliably in zones 3a through 9b, so it's a good fit here.
Can Hyssop grow in Harrison County's climate?
Yes — Hyssop grows well in Harrison County's temperate climate. Harrison County averages a 193-day frost-free season, with last frost around April 16 and first frost around October 26.
Your Harrison County Garden Planner — Free
A 22-page printable planner built for Harrison County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.