How to build a large rain garden at a school or park

.
This is a summary of what we learned during the construction of a large rain garden at Thoreau School.  It was an Eagle Scout project for Jack Nolan, age 14.  It was funded by a $1,500 grant from the Friends of Lake Winga, and supervised by David Thompson.

Attractive plants for shady rain gardens

.
If you are building a rain garden in the shade, consider the celandine poppy.