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At Maryland Sea Grant Extension, we take an “every little bit helps” approach to cleaning up the Bay. In other words, even small actions can add up if enough people are involved.
Rain gardens can certainly fit the bill. Rain gardens, or bioretention areas, are similar to ordinary gardens — except they’re dug deeper and incorporate a mixture of soil, sand, and compost. Essentially, they act like a sponge in your front lawn. Rain gardens are placed between stormwater runoff sources (roofs, driveways, parking lots) and runoff destinations (storm drains, streets, and streams.)
These gardens soak up water during storms, lowering the risk of flooding around your home. Rain gardens also help to retain many of the pollutants carried in stormwater — like lawn fertilizers, sediment, and pet waste — keeping them out of your local streams.
Rain gardens can help to improve the water quality in your community. After years of development, many regions of Maryland are now crisscrossed by roads, parking lots, and turf grass lawns. Water can’t soak into any of these surfaces like it does in natural soil. These changes to the normal cycling of water throughout a watershed can lead to a number of unwanted impacts:
Homeowners and property owners can install a rain garden at a reasonable expense and in a reasonable amount of time.
An array of native flowers and grasses are planted in rain gardens, making them a beautiful addition to your property. Many organizations and government groups also provide funding and technical assistance for homeowners interested in rain gardens.
To learn more about rain gardens, contact the watershed restoration specialist in your area of Maryland.
Download a free rain garden app for detailed information about how to install your own rain garden and plant it with native vegetation. The app, developed by the University of Connecticut for those in that state, now includes information for New Jersey, Delaware, and Maryland. Maryland Sea Grant Extension specialists contributed to expanding the app for Maryland.
You can also watch these short videos, produced by Maryland Sea Grant Extension in partnership with Angie’s List, the consumer website. The videos will take you through the steps below to install your own rain garden.
These videos were produced with funding from the Chesapeake Bay Trust. They were filmed and edited by Joe King.
Few owners of single-family homes (only 2.5 percent) have installed rain gardens. But a rebate program for covering the installation cost could increase that.
Those are among the findings of a report and survey by University of Maryland Extension. The report discusses homeowners' awareness of, and obstacles to their adopting, four Best Management Practices for controlling storm water: rain gardens, rain barrels, low fertilizer lawn care, and conservation landscaping.
The report also offers information that could help local governments and outreach professionals target specific groups to increase adoption or awareness levels.