Lilac-pink flowers are borne in a 5-6 inches wide, globose inflorescence atop a sturdy flower scape 3-4 feet tall.
The flowers color from the top of the inflorescence to
the base, changing from green to lilac-pink.
Late spring to early
summer.
Basal leaves, stiff and linear, up to 18 inches long,
2 inches wide, very smooth leaf surface. If leaves are cut or
bruised, they smell like onions.
Giant onion is very easily grown if placed in
full sun and well-drained soil.
The AlIium genus
is subject to a bulb rot caused by Sclerotium
cepivorum which prevents the flower stalk from
developing. Selection of clean bulbs and removing
diseased plants are effective control measures.
