When to plant Alliums in Rowan County, KY
Spring Alliums in Rowan County goes in mid-spring–late spring, once nighttime temps stop dipping near freezing. A second sowing from September 12 to September 26 extends the harvest into fall.
When to Plant Alliums in Rowan County, KY
Ornamental alliums (Allium spp.) bridge the gap between spring and summer with their striking globe-shaped flower heads in shades of purple, violet, white, and pink. Blooming after tulips have faded, they extend the spring display well into early summer. 'Gladiator', 'Globemaster', and 'Purple Sensation' produce softball-sized heads on 18–36 inch stems, while smaller species create charming accents at border fronts. Deer and rodents shun them completely due to the characteristic onion scent. Dried seed heads provide architectural interest into fall.
Rowan County, Kentucky is in USDA Zone 6b. The average last spring frost is April 16 and the first fall frost is October 24, giving you a growing season of approximately 191 days.
At an elevation of 2,014 feet, Rowan County receives approximately 49 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Alliums during the growing season.
Rowan County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Alliums Planting Timeline — Rowan County, KY
Alliums Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | October 10 | Oct 10 – Nov 7 |
| Fall Sowing | September 12 | Sep 12 – Sep 26 |
Plant 5" deep · 7" apart · Rows 8" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Bloom |
| November | Bloom |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Low — drought tolerant
📅 Days to Maturity
28–42 days
🧪 Soil pH
Needs 5.5–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6b
📆 Growing Season
191 days in Rowan County
Growing Tips for Rowan County
Plant bulbs in fall, 3–4 times as deep as the bulb diameter (typically 4–6 inches for large types, 3 inches for small species). Space 6–8 inches apart for standard cultivars. Foliage often looks untidy as it dies back before bloom — plant around perennials that will conceal the yellowing leaves. Excellent drainage is essential; alliums rot in wet soils. Leave bulbs in place for naturalization; divide every 3–4 years when clusters become congested. Deadhead spent globes or leave for ornamental seedheads and self-sowing.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Alliums in Other Locations
Frequently Asked Questions
When should I plant Alliums in Rowan County, KY?
Rowan County is in Zone 6b with an average last frost of April 16. Plan your Alliums planting based on this frost date — see the calendar above for exact timing.
What planting zone is Rowan County, KY?
Rowan County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 16 and first fall frost is October 24.
When should I plant Alliums in Rowan County, KY?
In Rowan County, KY, plant Alliums after the last frost (around April 16) and before the first frost (around October 24). Best results when soil holds above 50°F.
What growing zone is Rowan County, KY for Alliums?
Rowan County sits in USDA Zone 6b. Alliums grows reliably in zones 3a through 9b, so it's a good fit here.
Can Alliums grow in Rowan County's climate?
Yes — Alliums grows well in Rowan County's temperate climate. Rowan County averages a 191-day frost-free season, with last frost around April 16 and first frost around October 24.
Your Rowan County Garden Planner — Free
A 22-page printable planner built for Rowan County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.