A clump forming herbaceous perennial with dark green, toothed, lance shaped leaves. Fringed, double white flowers with yellow centres, flowering for a long period in the summer if dead-headed ...
Some of the most familiar perennials out there are species of the genus Rudbeckia, commonly called black-eyed Susans. Their cheery, bright yellow, daisy-like flowers are medium in size.
Perennial ryegrass (Lolium perenne) is a type of grass that is widely used for garden lawns. The reason perennial ryegrass is good for this purpose is because it's hardy, germinates quickly from seed ...