Creeping Jenny- Turn low-lying damp spots in your landscape into a colorful flower border by selecting perennials that thrive in wet soil. Here are some of the best perennials you can grow in soggy situations.
Day Lillies and Black Eyed Susan. Trumpet-shape daylilies come in colors such as pink, red and orange that complement classic orange-yellow black-eyed Susans. black-eyed Susan flowers last until midautumn.
the single variety, like these here are loved by hummingbirds. Biennial-they bloom every other year, with foliage on the off years. Plant sunflowers in the off years(for the birds, of course!), or more hollyhocks!