Members include shrubs, herbaceous perennials, and annuals. Wallflowers are annuals, herbaceous perennials or sub-shrubs. They are annuals, biennials, perennials, or shrubs. In open fields, nurseries grow decorative trees, shrubs and herbaceous perennials. Many trees, shrubs, vines, ferns and other herbaceous perennials form clonal colonies naturally. They are herbaceous perennials and annuals, some with woody bases. The plants may be annuals, herbaceous perennials or shrubs, growing to a height of . The species may be annuals, biennials or perennials. Nearly all forest plants are perennials, including the trees and shrubs. The garden is a combination of perennials, bulbs, grasses, shrubs and trees. They can be annuals, biennials, or perennials, upright or decumbent. They can generally either be grouped as annuals or perennials. Some species of "Scabiosa" are annuals, others perennials. Most are herbaceous perennials growing to tall. "Iberis" consists of about 30 species of annuals, perennials and evergreen subshrubs.