Beginner Gardening: Getting ready for the fall., 1 by Wetlandgardner

Wetlandgardner wrote:
Here are several pictures of my wetland backyard. I'd like to plant something, preferably colorful, in the fall to enjoy next spring and summer. As you can see, there are places that grass will not grow because of standing water runoff. I also have several starts of flowering trees from Arbor Day. They came as sticks and are leafing out.
Suggestions?
Wetlandgardner

PS: When I previewed my piece, I saw only one picture. It's the best one to show how no grass wants to grow because it's so wet - hard as concrete in drought.