The management and maintenance of shade and ornamental trees, as well as the care of shrubs, vines, and other perennial woody plants. Arborists focus on health and safety of individual trees and wooded landscapes and provide services to homebuilders, landscape contractors, and land developers - both for pre and post construction projects. Government regulations for tree preservation, conservation and replacement have increased the need for a certified arborist to be involved in construction projects from design through post construction phases.