Both Pachysandra the evergreen perennials and Polygonum also known as knotweed are what types of these plants?
Pachysandra Pachysandra is a genus of five species of evergreen perennials or subshrubs, belonging to the boxwood family Buxaceae. The species are native to eastern Asia and southeast North America, some reaching a height of 20 - , with only weakly woody stems. The leaves are alternate, leathery, with an entirely too coarsely toothed margin, and are typically 5 - long. The small uni-sexual blooms are greenish-white and produced in late spring or early summer.
Chaenorhinum Chaenorhinum is a genus consisting of about 20 species of annual and perennial herbs native to Turkey and the Mediterranean, where they thrive in dry stony areas and scree. They are closely related to snapdragons. The leaves are linear to oblong or rounded, opposite at the base. The flowers resemble snapdragons, being typically hooded, lobed and spurred. They are borne in terminal racemes or singly in the leaf axils of the branching stems.