Well, poo. I just wrote a long, elaborate post about the rain garden and it got deleted by accident. That stinks.
As I was saying… Our rain garden is now in its fourth summer, a season it doesn’t like much. Summer is hot, dry, and sunny, all things not much beloved of native Washington plants. Many of the ferns suffer quite a bit, barely surviving. They need more cool shade, being understory plants.

The below is the last little leafy twig on a much larger, mostly dead plant that got cooked last summer, and is also prey to predation by bunnies.