All the information you need to site and design a garden is found in the Rain Gardens: A Guide for Homeowners and Landscapers. Once you have a plan in place, select the plants for your garden. Choose plants by height, bloom time, color - whatever your preference.
The DNR has a listing of Native Plant Nurseries.
Schools may be eligible for free native plants for rain garden projects at your school site. Email us to see if your school is eligible!