Tapertip Onion
Allium
Liliaceae · perennial · introduced
Last updated
Tapertip onion is a bulbous perennial in the Amaryllidaceae family with grass-like foliage and small umbels of flowers on slender stems. Native to western North America, it grows in dry, rocky habitats at various elevations.
Give it full sun and well-drained soil for best performance. Monitor for pest and disease issues, as the genus has 23 known associations documented.
Quick Facts
Height
1 ft
Spread
0-2 ft
Growth Rate
Medium
Light
Full Sun
Soil
Moist
Water
Moderate
Hardiness
Zone Zones 5a–9b
Watch for this season
Downy MildewHigh
Spring New Growth - Early Infection Window
RustHigh
Aecial Stage (Alternate Host)
Powdery MildewModerate
Spring Emergence / Primary Infection
Diseases: Regionally Documented (22)
Fusarium oxysporum Basal Rot Penicillium expansum Blue Mold Rot Botrytis Blight Multiple obligate oomycetes (Peronosporaceae); species ar... Downy Mildew Fusarium Basal Rot Fusarium oxysporum f Fusarium Bulb Rot of Onion and Garlic (Dry Rot) Neck Rot (Gray Mold) Abiotic or Fusarium spp. Punky Bulb Thrips tabaci Purple Blotch Multiple genera (Melampsoridium, Thekopsora, Naohidemyces... Rust Stromatinia cepivora (syn. Sclerotium cepivorum) White Rot Iris yellow spot virus (IYSV) Iris Yellow Spot Chlaropsis thielavioides Black Mold Pectobacterium carotovorum and Enterobacter spp. Bulb Rots (Bacterial Soft Rots, Enterobacter Bulb Decay, Slippery Skin, Sour Skin, and Yeast Soft Rot) Setophoma terrestris (syn. Phoma terrestris) Pink Root Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Ustilago spp. Smut Stemphylium vesicarium Stemphylium Leaf Blight and Stalk Rot Twister Ditylenchus dipsaci Nematode, Stem and Bulb Pratylenchus spp. Nematode, Lesion Paratrichodorus renifer Nematode, Stubby-root
Cultivars (6)
'AlliYUM'
AlliYUM!™ Garlic Chives
'Windy City'
Windy City Ornamental Onion
'Millenium'
Ornamental Onion
'Serendipity'
'Serendipity' Ornamental Onion
'Nonelbmu' Glitterbug®
Glitterbug® Humble Bumble® Ornamental Chive
'Globemaster'
Data Maturity Structured Multiple sources. Expert review underway.