Western Michigan falls within USDA Hardiness Zones 5a to 6a, which means we have a moderately cool climate with cold winters.
Here are some native wetland plants suitable for our region:
Willow Species (Salix spp.)
Pickerelweed (Pontederia cordata)
Blue Flag Iris (Iris versicolor)
Swamp Milkweed (Asclepias incarnata)
Cardinal Flower (Lobelia cardinalis)
Joe Pye Weed (Eutrochium maculatum)
Bluejoint Grass (Calamagrostis canadensis)
Sweet Flag (Acorus calamus)
Red Twig Dogwood (Cornus sericea)
Elderberry (Sambucus canadensis)