Green stormwater infrastructures (GSIs) are typically built for multi-purposes: stormwater treatment and green space. Established vegetation is used to achieve the designed functions. However, plants often fail before they are established as they undergo constant stresses: either too wet or too dry. By design, GSIs flood during storms. Also by design, the growth media drain and dries out quickly between rain events to make room for the next storm. For that to happen, very porous growth media are used. The extreme variations in soil moisture make it very hard for any plant to survive. Other stresses such as road salt also make it hard to keep plants alive. This presentation will review novel technologies that can address the problems by using some of the abundant stormwater in GSIs. Capturing the stormwater also enhances the stormwater reduction and retention feature of GSIs. This stored stormwater can be used to irrigate the plants to ensure their survival.

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Wei Zhang

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