When to Plant Hyssop in Stephens County, TX
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.
Stephens County, Texas is in USDA Zone 8a. The average last spring frost is April 4 and the first fall frost is November 10, giving you a growing season of approximately 220 days.
At an elevation of 3,055 feet, Stephens County receives approximately 63.4 inches of rainfall annually with predominantly loam soil. Summer highs average 92°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.
Stephens County Soil Profile
Soil Type
Loam
Soil pH
6.7-7.7
Drainage
Well Drained
Monthly Watering Guide for Hyssop
Hyssop needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Hyssop Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.7" | 0" | ❄️ Dormant |
| Feb | — | 2.3" | 0" | ❄️ Dormant |
| Mar | — | 3.6" | 0" | ❄️ Dormant |
| Apr | 4.3" | 7.1" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 9.8" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 10.6" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 7.2" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 6.5" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.4" | 0.9" | 💧 Light watering |
| Nov | 4.3" | 2.1" | 2.2" | 🚿 Regular watering |
| Dec | — | 1.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Nov in Stephens County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Hyssop Planting Timeline — Stephens County, TX
Hyssop Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 11 | Apr 11 – Apr 25 |
| Harvest | June 20 | Jun 20 – Aug 22 |
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 8a
📆 Growing Season
220 days in Stephens County
Growing Tips for Stephens 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 Stephens County, TX?
Stephens County is in Zone 8a with an average last frost of April 4. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.
What planting zone is Stephens County, TX?
Stephens County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is April 4 and first fall frost is November 10.
Your Stephens County Garden Planner — Free
A 22-page printable planner built for Stephens County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.