When to plant Alliums in Henry County, KY
Henry County sits in USDA Zone 6b. Plant Alliums between mid-spring (after last frost on April 10) and late spring. A second sowing from September 14 to September 28 extends the harvest into fall.
When to Plant Alliums in Henry 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.
Henry County, Kentucky is in USDA Zone 6b. The average last spring frost is April 10 and the first fall frost is October 26, giving you a growing season of approximately 199 days.
At an elevation of 1,436 feet, Henry County receives approximately 51.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Alliums during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Alliums root diseases.
Henry County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Alliums Planting Timeline — Henry County, KY
Alliums Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Bloom | October 12 | Oct 12 – Nov 9 |
| Fall Sowing | September 14 | Sep 14 – Sep 28 |
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
199 days in Henry County
Growing Tips for Henry 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
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Alliums in Other Locations
Frequently Asked Questions
When should I plant Alliums in Henry County, KY?
Henry County is in Zone 6b with an average last frost of April 10. Plan your Alliums planting based on this frost date — see the calendar above for exact timing.
What planting zone is Henry County, KY?
Henry County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 10 and first fall frost is October 26.
When should I plant Alliums in Henry County, KY?
In Henry County, KY, plant Alliums after the last frost (around April 10) and before the first frost (around October 26). Best results when soil holds above 50°F.
What growing zone is Henry County, KY for Alliums?
Henry 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 Henry County's climate?
Yes — Alliums grows well in Henry County's temperate climate. Henry County averages a 199-day frost-free season, with last frost around April 10 and first frost around October 26.
Your Henry County Garden Planner — Free
A 22-page printable planner built for Henry 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.