plants for boggy/swale area in NH
Greetings, all. I'm writing from Portland, OR, regarding my sister's yard. She lives in the Nashua area of NH. Much of the three acres is forested, but the house has beds and "lawn" (assorted grasses, yarrow, clover, etc.). There is a boggy area, what we in PNW call a swale, on one side of the house that is permanently damp/wet, shaded for part of the day but a bright, high shade.
If she lived here, I'd help her plant camus and other PNW natives.
What northeastern plants would you recommend? Must be able to naturalize, survive the weather, etc.
Thanks in advance for info and input.