When to plant Alliums in Buchanan County, MO
The best window to plant Alliums in Buchanan County, is mid-spring–late spring, when soil warms to 50°F. Last frost typically hits April 13; first frost October 24. A second sowing from September 12 to September 26 extends the harvest into fall.
When to Plant Alliums in Buchanan County, MO
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.
Buchanan County, Missouri is in USDA Zone 6a. The average last spring frost is April 13 and the first fall frost is October 24, giving you a growing season of approximately 194 days.
At an elevation of 1,340 feet, Buchanan County receives approximately 31.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Alliums to ensure they mature before fall.
Buchanan County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Alliums Planting Timeline — Buchanan County, MO
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 6a
📆 Growing Season
194 days in Buchanan County
Growing Tips for Buchanan 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 Buchanan County, MO?
Buchanan County is in Zone 6a with an average last frost of April 13. Plan your Alliums planting based on this frost date — see the calendar above for exact timing.
What planting zone is Buchanan County, MO?
Buchanan County, Missouri is in USDA Hardiness Zone 6a. The average last spring frost is April 13 and first fall frost is October 24.
When should I plant Alliums in Buchanan County, MO?
In Buchanan County, MO, plant Alliums after the last frost (around April 13) and before the first frost (around October 24). Best results when soil holds above 50°F.
What growing zone is Buchanan County, MO for Alliums?
Buchanan County sits in USDA Zone 6a. Alliums grows reliably in zones 3a through 9b, so it's a good fit here.
Can Alliums grow in Buchanan County's climate?
Yes — Alliums grows well in Buchanan County's temperate climate. Buchanan County averages a 194-day frost-free season, with last frost around April 13 and first frost around October 24.
Your Buchanan County Garden Planner — Free
A 22-page printable planner built for Buchanan 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.