The term rain gardens sounds kind of romantic. I imagine something vaguely tropical with exotic blossoms amid rain drenched foliage viewed from a wicker chair on a veranda.  In reality a rain garden can have colorful blossoms, not necessarily exotic, but when the foliage is rain drenched the rain garden is doing its work of infiltration. Infiltration is not a romantic term. I have heard the term rain garden and seen Master Gardener work sheets on building a…