Allium caesium is a rare ornamental onion with large 4 inch wide, sky blue to milky royal blue spheres held on stems to about two feet tall.
Allium caesium is a rare ornamental onion with large 4 inch wide spheres (double the size of the common A. caeruleum) with sky blue to milky royal blue spheres held on stems to about two feet tall. Few plants can offer the unique flower forms of ornamental onions. Every garden should have Alliums. Plant in multiples of 3, 5, 7 or more. Don't fret when foliage starts to die back just before flowering. It's normal. Just trim the leaves.
Common Name: Ornamental Onion
Family: Amaryllidaceae (The Amaryllis Family)
Zone Hardiness: 4-8
Light: Full Sun, Part Sun
Primary Bloom Colour: Blue
Secondary Bloom Colour:
Bloom Time: Late Spring
Soil Moisture: Dry, Average
Deer Resistant: Unknown
BC Native: No
Native Habitat: Deserts and dry fields of central Asia from 700-2000 metres.
Geogrpahical Origin: Asia and the Pacific - Southwest Asia and Asia Minor
*The Plant Encyclopedia is updated each year to provide a representation of the plants we offer, have offered, and may offer again. However, it is not a live inventory of our stock. Not all plants will be available at all times or in every year. Use the link above to enquire about the availability of this plant. Additionally, we carry many plants that have not yet been entered into our database so please enquire if you don’t see what you’re looking for. Plants are available only for on-site sales at our nursery in Richmond, BC, Canada or for shipping within Canada. We do not ship internationally. However, if you are visiting the nursery from afar, we can arrange for the necessary permits and paperwork for you to take plants back with you to your country.