A rain garden is a natural or created shallow depression used to capture and absorb stormwater runoff from impervious areas (roofs, driveways, etc.). Planted with suitable trees, shrubs, flowers, and other plants, a rain garden allows runoff to soak into the ground — increasing groundwater recharge rates and improving water quality by serving as a buffer to shoreline areas. The many benefits of a rain garden installation include:
- Capturing runoff before it enters a lake or pond.
- Providing habitat for wildlife and increase biodiversity.
- Offering an appealing alternative to traditional landscaping.
- Reducing lawn maintenance demands (rain gardens do not need to be mowed).
- Reducing storm drain overload and flooding when adopted on a community scale.
Is a rain garden right for your property?
Rain gardens do best in full or partial sun and should be planted with native, non-invasive plant species that are resistant to the stresses of brief periods of pooling and dry periods between rainfall events. They should also be located at appropriate distances from structures (to protect foundations from infiltrating water), wells and septic systems. While a rain garden is being established (generally in the first year) it may need some supplemental watering and weeding, but a well-established rain garden will need minimal maintenance. The installation cost of a rain garden can vary greatly based on size, location, access and plant selection, and plans can be tailored to individual property features and budgets.
Image courtesy U.S. Dept. of Agriculture Natural Resources Conservation Service
