Rain Garden

A rain garden is a shallow depression that collects, absorbs and filters storm water runoff from rooftops, driveways, patios and other areas that donít allow water to soak in. Rain gardens filter and reduce the amount of pollutants that could enter our lakes, streams and Puget Sound. The Evergreen Arboretum and Gardens rain garden is designed to drain rapidly with surface water present for only 1 to 2 days once the rain stops. The soil mix allows water to soak in rapidly and support landscape plants to fit the surroundings. The rain garden in the Arboretum is landscaped with a variety of plants that tolerate different moisture conditions, from those in the lower section that can be partly submerged occasionally, to typical landscape trees and shrubs in the higher areas that do not remain wet. This rain garden is a joint effort of WSU Master Gardeners of Snohomish County, Everett Public Works, Everett Parks and Recreation, and the Evergreen Arboretum and Gardens Foundation.

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