Rain gardens are natural or planted depressions that absorb and filter rainwater from urban residential and commercial areas, including roofs, driveways and walkways. They are primarily landscaped with native plant species to add aesthetic value to a property while simultaneously recharging groundwater supplies and providing onsite treatment and storage of stormwater runoff. Runoff collects in rain gardens and is filtered through vegetation and soil containing special microbes that remove contaminants and nutrients. They are similar to bioretention areas in that they provide the same benefits and require similar considerations.
Native plants are best for rain gardens because they do not require excess watering.
Courtesy of UCF Stormwater Management Academy