When to plant Hyssop in Chaffee County, CO
In Chaffee County, Hyssop is a single-season spring crop — there's no second fall window. Plant June 23–July 7 for an 70–90-day harvest, finishing well before the September 7 first frost.
When to Plant Hyssop in Chaffee County, CO
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.
Chaffee County, Colorado is in USDA Zone 5b. The average last spring frost is June 16 and the first fall frost is September 7, giving you a growing season of approximately 83 days.
At an elevation of 7,788 feet, Chaffee County receives approximately 18.6 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Hyssop during the growing season. With low rainfall, drip irrigation is essential for growing Hyssop successfully. Mulch heavily to conserve soil moisture.
Chaffee County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Hyssop Planting Timeline — Chaffee County, CO
Hyssop Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | June 23 | Jun 23 – Jul 7 |
| Harvest | September 1 | Sep 1 – Nov 3 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | Transplant Outdoors |
| July | Transplant Outdoors |
| August | — |
| September | Harvest |
| October | Harvest |
| November | Harvest |
| 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 5b
📆 Growing Season
83 days in Chaffee County
Growing Tips for Chaffee 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
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Hyssop in Other Locations
Frequently Asked Questions
When should I plant Hyssop in Chaffee County, CO?
Chaffee County is in Zone 5b with an average last frost of June 16. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.
What planting zone is Chaffee County, CO?
Chaffee County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is June 16 and first fall frost is September 7.
When should I plant Hyssop in Chaffee County, CO?
In Chaffee County, CO, plant Hyssop after the last frost (around June 16) and before the first frost (around September 7). Best results when soil holds above 50°F.
What growing zone is Chaffee County, CO for Hyssop?
Chaffee County sits in USDA Zone 5b. Hyssop grows reliably in zones 3a through 9b, so it's a good fit here.
Can Hyssop grow in Chaffee County's climate?
Yes — Hyssop grows well in Chaffee County's temperate climate. Chaffee County averages a 83-day frost-free season, with last frost around June 16 and first frost around September 7.
Your Chaffee County Garden Planner — Free
A 22-page printable planner built for Chaffee County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.