Researchers who visited post-hurricane sites found that many incidents of tree failure could have been prevented with appropriate design and management. Many large trees had been planted too close to curbs, sidewalks, foundations, and pavement. Roots on mature trees had either decayed or been cut close to the trunk. These conditions resulted in trees toppling in high winds. Limited rooting space presents a challenge to creating sustainable landscapes. This fact sheet discusses strategies for developing strong root systems on newly planted trees and preserving the roots of existing trees. Other elements of wind-resistant design, such as design solutions for existing situations, tree grouping and species selection, are also described.