When to plant Crocus in Park County, MT
Aim to plant Crocus in Park County on or after mid-spring; the window stays open through late spring. Park County's 119-day frost-free season gives you just enough for one full spring planting. A second sowing from August 9 to August 23 extends the harvest into fall.
When to Plant Crocus in Park County, MT
Crocuses (Crocus spp.) are the heralds of spring — small, gem-like blooms that push up through frozen ground or even snow, often weeks before any other flower. Their compact corms naturalize readily in lawns, rock gardens, and borders, creating drifts of purple, white, and yellow that expand year after year. Bees prize early crocus as one of their first nectar and pollen sources of the season. The saffron crocus (C. sativus) blooms in fall and yields the world's most expensive spice.
Park County, Montana is in USDA Zone 5a. The average last spring frost is May 24 and the first fall frost is September 20, giving you a growing season of approximately 119 days.
At an elevation of 6,994 feet, Park County receives approximately 22.2 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Crocus to ensure they mature before fall.
Park County Soil Profile
Soil Type
Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Crocus Planting Timeline — Park County, MT
Crocus Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | June 21 | Jun 21 – Jul 12 |
| Fall Sowing | August 9 | Aug 9 – Aug 23 |
Plant 4" deep · 3" apart · Rows 4" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | Bloom |
| July | Bloom |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
10–20 days
🧪 Soil pH
Needs 6–7 · Your soil: N/A
🗺️ USDA Zone
Zone 5a
📆 Growing Season
119 days in Park County
Growing Tips for Park County
Plant corms 3–4 inches deep and 2–3 inches apart in fall, when soil temperature drops below 60°F. Mass plantings (at least 25 corms per cluster) create the most visual impact. Plant in well-drained soil — corms rot in standing water. Crocus naturalize well under deciduous trees; the tree leafs out after crocus dormancy begins, so light competition is minimal. Squirrels and chipmunks dig corms — plant deeper (4 inches) or use wire mesh baskets in high-predation areas. Allow foliage to die back naturally before mowing lawns. In zones 8a–8b, plant in December with pre-chilled corms for best results.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Crocus in Other Locations
Frequently Asked Questions
When should I plant Crocus in Park County, MT?
Park County is in Zone 5a with an average last frost of May 24. Plan your Crocus planting based on this frost date — see the calendar above for exact timing.
What planting zone is Park County, MT?
Park County, Montana is in USDA Hardiness Zone 5a. The average last spring frost is May 24 and first fall frost is September 20.
When should I plant Crocus in Park County, MT?
In Park County, MT, plant Crocus after the last frost (around May 24) and before the first frost (around September 20). Best results when soil holds above 50°F.
What growing zone is Park County, MT for Crocus?
Park County sits in USDA Zone 5a. Crocus grows reliably in zones 3a through 8b, so it's a good fit here.
Can Crocus grow in Park County's climate?
Yes — Crocus grows well in Park County's temperate climate. Park County averages a 119-day frost-free season, with last frost around May 24 and first frost around September 20.
Your Park County Garden Planner — Free
A 22-page printable planner built for Park County (Zone 5a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.