Allium altissimum

Allium alitissimum is the tallest of all ornamental onions at 5-6 feet with large, warm purple spheres.

Allium altissimum is the tallest of all ornamental onions topping off at 5-6 feet with large, spherical heads of warm purple flowers. Few plants can offer the unique flower forms of ornamental onions with spring and early summer flowers, attractive summer seed heads that dry to give winter interest. 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 - [Spring B&B Pre-Order]

Family:  Amaryllidaceae (The Amaryllis Family)

Zone Hardiness:  5-9

Light:  Full Sun, Part Sun

Height:  4-6'

Width:  8-12"

Primary Bloom Colour:  Purple

Secondary Bloom Colour:  

Bloom Time:  Late Spring - Summer

Foliage Colour:  Green

Class:  Deciduous

Type:  Perennial

Soil Moisture:  Dry, Average

Stem Colour:  

Fragrance:  Yes

Berries:  

Benefits:  Bees, Butterflies

Deer Resistant:  Yes

BC Native:  No

Native Habitat:  With rare exception, Alliums are native to the Northern hemisphere, particularly in Asia and the eastern Mediterranean. Most enjoy sun and dry, well drained mineral soils.

Award:  

Geographical Origin:  Europe and Western Russia