Allium giganteum, native to central and southwestern Asia and with a common name of giant onion, is perhaps the tallest of the ornamental onions. It is a bullous perennial which produces a basal rosette of grayish-green, strap-shaped leaves. From the center of each basal rosette rises a thick scape which is topped by dense, globular, softball-sized cluster of tiny, star-shaped lilac purple florets. Leaves and scapes smell like onions when bruised, but plant is not used for culinary purposes. [Photo from WeChat: csnbgsh]

Philadelphus coronaries, is at home of southern Europe. It is a deciduous, upright shrub grown for its very fragrant, creamy, abundant white blossoms that bloom in early summer. The plant has golden yellow leaves in spring that turn yellow-green in summer. [Photo from WeChat: csnbgsh]