Tall and white, as suggested by its name, Allium 'Mont Blanc' is a splendid beauty with 4-inch wide (10 cm) umbels of pure-white flowers atop sturdy, upright stems. The foliage of basal, semi-erect strap-shaped grayish-green leaves is also quite ornamental. Blooming in late spring to early summer, this spectacular bulbous perennial enjoys long-lasting blooms and remains ornamental in the garden well into summer.