Establishment of native vegetation in landscaped areas is often a component of other stormwater best management practices such as filter strips, bioretention features, and green roofs. Deep root systems (3 to 10 feet or more) help filter and absorb rainwater. A filter strip is an area with dense, preferably native vegetative cover (they can also be planted with turf grass) that is used to slow, filter, and absorb runoff from impervious areas. Use native plant and tree species that are adapted to urban applications.

Applicability

Native landscapes are appropriate for nearly all new and retrofit landscapes. Native landscapes can be used for nearly any landscape installation along a water edge, rainwater management practices, parks, green roofs, residential courtyards, and gardens.

Benefits

• Reduces runoff volumes (by up to 65% when used with bioretention and/or filter strips).
• Increases ability of landscape to remove nutrients (up to 70%), heavy metals (up to 80%), sediment, and other pollutants, especially when used with other stormwater practices.
• Stabilizes and increases organic content of soils.
• Reduces irrigation and fertilization requirements.
• Reduces use of fossil fuels and air and noise pollution relative to turf landscapes that require regular mowing and maintenance.
• Provides wildlife habitat for birds, butterflies, and insects.
• Moderates temperature extremes and urban heat island effect.
• Provides aesthetic benefits throughout the year.