When to plant Crocus in Big Stone County County,
The best window to plant Crocus in Big Stone County County, is mid-spring–late spring, when soil warms to 50°F. Last frost typically hits May 2; first frost October 4. A second sowing from August 23 to September 6 extends the harvest into fall.
When to Plant Crocus in Big Stone County, MN
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.
Big Stone County, Minnesota is in USDA Zone 4b. The average last spring frost is May 2 and the first fall frost is October 4, giving you a growing season of approximately 155 days.
At an elevation of 823 feet, Big Stone County receives approximately 32.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 81°F, so choose short-season varieties of Crocus to ensure they mature before fall.
Big Stone County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Crocus Planting Timeline — Big Stone County, MN
Crocus Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | June 28 | Jun 28 – Jul 26 |
| Fall Sowing | August 23 | Aug 23 – Sep 6 |
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 | Fall Sowing |
| 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 4b
📆 Growing Season
155 days in Big Stone County
Growing Tips for Big Stone 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 Big Stone County, MN?
Big Stone County is in Zone 4b with an average last frost of May 2. Plan your Crocus planting based on this frost date — see the calendar above for exact timing.
What planting zone is Big Stone County, MN?
Big Stone County, Minnesota is in USDA Hardiness Zone 4b. The average last spring frost is May 2 and first fall frost is October 4.
When should I plant Crocus in Big Stone County County, ?
In Big Stone County County, , plant Crocus after the last frost (around May 2) and before the first frost (around October 4). Best results when soil holds above 50°F.
What growing zone is Big Stone County County, for Crocus?
Big Stone County County sits in USDA Zone 4b. Crocus grows reliably in zones 3a through 8b, so it's a good fit here.
Can Crocus grow in Big Stone County County's climate?
Yes — Crocus grows well in Big Stone County County's temperate climate. Big Stone County County averages a 155-day frost-free season, with last frost around May 2 and first frost around October 4.
Your Big Stone County Garden Planner — Free
A 22-page printable planner built for Big Stone County (Zone 4b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.