Landscaping is the physical modification of outdoors to serve the needs of people by planting, altering the contours of the ground, and building structures and amenities such as pedestrian ways, paths and picnic areas. Natural landscaping implies the use of native plants but has slightly broader implications because it also suggests landscaping to give the 'look' of the landscape that existed before the mid-1800s. In addition, there may also be an attempt to restore or reconstruct the landscape to look and function more as it did before settlers, other than Native Americans lived here. Natural landscaping applies to a wide array of landscaping techniques that help retain natural landscape features, including wetlands woodlands and natural drainage features. For example, natural landscaping site design incorporates natural drainage features such as swales and vegetated 'filter strips' in contrast to storm sewers and artificial drainage channels. These terms are relatively new and their definitions are somewhat fluid. Questions of terminology should not obscure the basic intent or concepts. The term 'natural landscaping' will be used throughout this guide. In the Appendix of this guide is a glossary of frequently used termed associated with natural landscaping.