[mudman]

I would look for a native marginal seed mix tailored for your region (local, not USDA). If you need immediate roots/stabilization supplement with some sedges from a nursery.

For good long term erosion control seeded mixes perform much better that similar limited species plantings of potted plants. Naturally selected variety is key.

Check state websites for wetland related concerns, we have lots of conservation groups local who will make a site assess and help source the material. I play with plants for a living but use those resources when needed cuz they really know their specialty.