When to Plant Hyssop in Coal County, OK
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.
Coal County, Oklahoma is in USDA Zone 7b. The average last spring frost is March 28 and the first fall frost is November 2, giving you a growing season of approximately 219 days.
At an elevation of 892 feet, Coal County receives approximately 28.5 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Hyssop during the growing season.
Coal County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Hyssop Planting Timeline — Coal County, OK
Hyssop Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 4 | Apr 4 – Apr 18 |
| Harvest | June 13 | Jun 13 – Aug 15 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| 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 7b
📆 Growing Season
219 days in Coal County
Growing Tips for Coal 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
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Hyssop in Other Locations
Frequently Asked Questions
When should I plant Hyssop in Coal County, OK?
Coal County is in Zone 7b with an average last frost of March 28. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.
What planting zone is Coal County, OK?
Coal County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is March 28 and first fall frost is November 2.
Plan Your Garden with Confidence
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