I’m not sure I’ve identified this flower correctly, so if anyone knows better, please tell me. This plant looks like a Harebell, according to my Audubon Field Guide to Wildflowers.
https://en.wikipedia.org/wiki/Campanula_rotundifolia
I spotted one or two last year, but they must have seeded well, because they are quite prolific in one area along the trail.
The Swamp Milkweed is doing well too, and I noticed my first Monarch butterfly visiting today.
I learned that these butterflies go through four generations in one year, the last one emerging in September and then migrating to Mexico. You can read about that here.
https://www.monarch-butterfly.com/
Hopefully, later in the year we’ll spot some Monarch caterpillars grazing on the milkweed.
The Oxbow Blog 