Season: Very Late
Plant Height: 30 inches
"Nigrum" is Latin for "black," and yet this allium has white flowers. They are arranged in hemispheres 4 inches across. Borne on slender stems, they float like small clouds over the garden. Bloom follows that of Mount Everest.
Note: Alliums are resistant to deer, but rodents such as voles and gophers may eat the bulbs.