When to plant Yarrow in Miller County, AR
In Zone 8b (Miller County), direct-sow Yarrow between March 7 and March 28 for spring, after the March 21 last-frost mark.
When to Plant Yarrow in Miller County, AR
Achillea millefolium (Yarrow) is a tough, drought-tolerant native perennial with aromatic finely-divided foliage and broad flat-topped flower clusters that serve as a landing platform for hundreds of beneficial insect species. Available in white (the species type) and a wide range of cultivars spanning yellow, gold, pink, salmon, and deep red. Spreads by rhizome to form ground-covering colonies; blooms from late spring through midsummer with reblooming into fall if deadheaded. Exceptional in hot, dry sites where other perennials fail.
Miller County, Arkansas is in USDA Zone 8b. The average last spring frost is March 21 and the first fall frost is November 12, giving you a growing season of approximately 236 days.
At an elevation of 266 feet, Miller County receives approximately 50.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Yarrow during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Yarrow root diseases.
Miller County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Yarrow Planting Timeline — Miller County, AR
Yarrow Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 24 | Jan 24 – Feb 7 |
| Transplant Outdoors | March 21 | Mar 21 – Apr 4 |
| Direct Sow | March 7 | Mar 7 – Mar 28 |
| Bloom | May 23 | May 23 – Oct 17 |
· 18" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors |
| February | Start Indoors |
| March | Transplant Outdoors Direct Sow |
| April | Transplant Outdoors |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
60–90 days
🧪 Soil pH
Needs 5.5–7 · Your soil: N/A
🗺️ USDA Zone
Zone 8b
📆 Growing Season
236 days in Miller County
Growing Tips for Miller County
Start seeds indoors 8–10 weeks before last frost; seeds need light for germination — press onto soil surface, do not cover. Direct sow after last frost or divide established clumps in spring or fall. Thrives in poor, well-drained soil — rich soil and high fertility cause floppy stems and reduce flower count. Avoid overwatering; excellent drought tolerance once established. Deadhead spent clusters to encourage rebloom. Divide every 2–3 years to prevent center die-out and control spread. Year 2+ plants bloom most heavily; first-year plants may produce limited flowers. Dried flowers retain color well for arrangements.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Yarrow in Other Locations
Frequently Asked Questions
When should I plant Yarrow in Miller County, AR?
Miller County is in Zone 8b with an average last frost of March 21. Plan your Yarrow planting based on this frost date — see the calendar above for exact timing.
What planting zone is Miller County, AR?
Miller County, Arkansas is in USDA Hardiness Zone 8b. The average last spring frost is March 21 and first fall frost is November 12.
When should I plant Yarrow in Miller County, AR?
In Miller County, AR, plant Yarrow after the last frost (around March 21) and before the first frost (around November 12). Best results when soil holds above 50°F.
What growing zone is Miller County, AR for Yarrow?
Miller County sits in USDA Zone 8b. Yarrow grows reliably in zones 3a through 9b, so it's a good fit here.
Can Yarrow grow in Miller County's climate?
Yes — Yarrow grows well in Miller County's temperate climate. Miller County averages a 236-day frost-free season, with last frost around March 21 and first frost around November 12.
Your Miller County Garden Planner — Free
A 22-page printable planner built for Miller County (Zone 8b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.