When to plant Coreopsis in Garrett County, MD
Aim to plant Coreopsis in Garrett County on or after May 5; the window stays open through May 26. Garrett County's 172-day frost-free season gives you a single solid spring crop with a brief fall option.
When to Plant Coreopsis in Garrett County, MD
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.
Garrett County, Maryland is in USDA Zone 6a. The average last spring frost is April 28 and the first fall frost is October 17, giving you a growing season of approximately 172 days.
At an elevation of 21 feet, Garrett County receives approximately 41.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Coreopsis during the growing season.
Garrett County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Coreopsis Planting Timeline — Garrett County, MD
Coreopsis Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 24 | Feb 24 – Mar 10 |
| Transplant Outdoors | May 5 | May 5 – May 19 |
| Direct Sow | May 5 | May 5 – May 26 |
| Bloom | July 14 | Jul 14 – Nov 3 |
Plant 0.1" deep · 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Bloom |
| 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 6a
📆 Growing Season
172 days in Garrett County
Growing Tips for Garrett 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 Garrett County, MD?
Garrett County is in Zone 6a with an average last frost of April 28. Plan your Coreopsis planting based on this frost date — see the calendar above for exact timing.
What planting zone is Garrett County, MD?
Garrett County, Maryland is in USDA Hardiness Zone 6a. The average last spring frost is April 28 and first fall frost is October 17.
When should I plant Coreopsis in Garrett County, MD?
In Garrett County, MD, plant Coreopsis after the last frost (around April 28) and before the first frost (around October 17). Best results when soil holds above 50°F.
What growing zone is Garrett County, MD for Coreopsis?
Garrett County sits in USDA Zone 6a. Coreopsis grows reliably in zones 3a through 9b, so it's a good fit here.
Can Coreopsis grow in Garrett County's climate?
Yes — Coreopsis grows well in Garrett County's temperate climate. Garrett County averages a 172-day frost-free season, with last frost around April 28 and first frost around October 17.
Your Garrett County Garden Planner — Free
A 22-page printable planner built for Garrett County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.