When to plant Coreopsis in Dickinson County, MI
The best window to plant Coreopsis in Dickinson County, is May 19–June 9, when soil warms to 50°F. Last frost typically hits May 12; first frost October 9.
When to Plant Coreopsis in Dickinson County, MI
Coreopsis (Tickseed) is a cheerful, long-blooming native perennial that produces a continuous flush of bright yellow, gold, or bi-colored daisy-like flowers from early summer well into fall. One of the most reliable cut-and-come-again bloomers in the perennial garden, it thrives in hot, dry, sunny conditions and poor soil where many competitors struggle. An invaluable nectar source for native bees and butterflies, and a butterfly host plant for several species.
Dickinson County, Michigan is in USDA Zone 4b. The average last spring frost is May 12 and the first fall frost is October 9, giving you a growing season of approximately 150 days.
At an elevation of 892 feet, Dickinson County receives approximately 32.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 82°F, so choose short-season varieties of Coreopsis to ensure they mature before fall.
Dickinson County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Coreopsis Planting Timeline — Dickinson County, MI
Coreopsis Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 3 | Mar 3 – Mar 17 |
| Transplant Outdoors | May 26 | May 26 – Jun 9 |
| Direct Sow | May 19 | May 19 – Jun 9 |
| Bloom | August 11 | Aug 11 – Nov 3 |
Plant 0.1" deep · 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | Transplant Outdoors Direct Sow |
| July | — |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | Bloom |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
60–80 days
🧪 Soil pH
Needs 5.5–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 4b
📆 Growing Season
150 days in Dickinson County
Growing Tips for Dickinson County
Start seeds indoors 8–10 weeks before last frost or direct sow after last frost. Seeds germinate easily without stratification. Thrives in poor to average, well-drained soil — rich soil promotes foliage over flowers. Drought tolerant once established; overwatering is the most common mistake. Deadhead spent blooms to maintain continuous flowering through the season. Shear plants by one-third in midsummer for a fresh flush of late-season blooms. Year 2+ plants bloom most heavily. Divide every 2–3 years in early spring to rejuvenate crowded clumps.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Coreopsis in Other Locations
Frequently Asked Questions
When should I plant Coreopsis in Dickinson County, MI?
Dickinson County is in Zone 4b with an average last frost of May 12. Plan your Coreopsis planting based on this frost date — see the calendar above for exact timing.
What planting zone is Dickinson County, MI?
Dickinson County, Michigan is in USDA Hardiness Zone 4b. The average last spring frost is May 12 and first fall frost is October 9.
When should I plant Coreopsis in Dickinson County, MI?
In Dickinson County, MI, plant Coreopsis after the last frost (around May 12) and before the first frost (around October 9). Best results when soil holds above 50°F.
What growing zone is Dickinson County, MI for Coreopsis?
Dickinson County sits in USDA Zone 4b. Coreopsis grows reliably in zones 3a through 9b, so it's a good fit here.
Can Coreopsis grow in Dickinson County's climate?
Yes — Coreopsis grows well in Dickinson County's temperate climate. Dickinson County averages a 150-day frost-free season, with last frost around May 12 and first frost around October 9.
Your Dickinson County Garden Planner — Free
A 22-page printable planner built for Dickinson 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.