When to plant Mint in Rio Blanco County, CO
Rio Blanco County sits in cold Zone 5b. Plant Mint June 9–June 23 for the single annual harvest; the September 17 first frost closes the window.
When to Plant Mint in Rio Blanco County, CO
Mint is a vigorous perennial herb with refreshing, aromatic leaves used in teas, cocktails, and cooking. It spreads aggressively by underground runners.
Rio Blanco County, Colorado is in USDA Zone 5b. The average last spring frost is June 2 and the first fall frost is September 17, giving you a growing season of approximately 107 days.
At an elevation of 6,974 feet, Rio Blanco County receives approximately 19 inches of rainfall annually with predominantly loam soil. Summer highs average 86°F, providing good warmth for Mint during the growing season. With low rainfall, drip irrigation is essential for growing Mint successfully. Mulch heavily to conserve soil moisture.
Rio Blanco County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Mint Planting Timeline — Rio Blanco County, CO
Mint Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | June 9 | Jun 9 – Jun 23 |
| Harvest | August 11 | Aug 11 – Oct 20 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | Transplant Outdoors |
| July | — |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
High — keep soil consistently moist
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5b
📆 Growing Season
107 days in Rio Blanco County
Growing Tips for Rio Blanco County
Always grow mint in containers or with underground barriers to control spreading. Harvest regularly to keep plants compact. Cut plants back in late summer for a fresh fall flush.
Companion Planting
Good Companions
Avoid Planting Near
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Mint in Other Locations
Frequently Asked Questions
When should I plant Mint in Rio Blanco County, CO?
Rio Blanco County is in Zone 5b with an average last frost of June 2. Plan your Mint planting based on this frost date — see the calendar above for exact timing.
What planting zone is Rio Blanco County, CO?
Rio Blanco County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is June 2 and first fall frost is September 17.
When should I plant Mint in Rio Blanco County, CO?
In Rio Blanco County, CO, plant Mint after the last frost (around June 2) and before the first frost (around September 17). Best results when soil holds above 50°F.
What growing zone is Rio Blanco County, CO for Mint?
Rio Blanco County sits in USDA Zone 5b. Mint grows reliably in zones 3a through 10b, so it's a good fit here.
Can Mint grow in Rio Blanco County's climate?
Yes — Mint grows well in Rio Blanco County's temperate climate. Rio Blanco County averages a 107-day frost-free season, with last frost around June 2 and first frost around September 17.
Your Rio Blanco County Garden Planner — Free
A 22-page printable planner built for Rio Blanco 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.