Thursday, May 31, 2007
A rain garden is depressional area that is created to hold rain water and let it infiltrate into the ground rather than running off the lawn. Its planted with plants that can tolerate varying moisture conditions from very wet to very dry. The plants also have deep fibrous root systems that soak up the excess water that has been directed to the depression.
Roof downspouts can be directed into a rain garden, or it could just be a low area that your driveway drains into. Rain gardens usually have native plants, but can include non-native plants as well.
There are two main benefits that I see for having a rain garden. First, more water is absorbed through the ground, keeping pollutants out of the groundwater. Second is that a rain garden means less grass to mow and water.