Experts and BHG readers answer.
Flowers or flowering shrubs
The list of perennials that like a sunny, wet site include: Euphorbia, Ligularia, Meadowsweet (Filipendula), Primula, Rodgersia, Trollis, Lobelia, and Iris. Astilbe and some Hostas (including August Moon, Honeybells, and Sum and Substance) can take a moist site in part sun. Shrubs for wet, sunny sites include: Chokeberry (Aronia), Clethra (C. alnifolia), Ninebark (Physocarpus), Bog Myrtle (Myrica gale), Serviceberry (Amelanchier canadensis) Calycanthus, Bridal Wreath Spirea (Spiraea x vanhouttei), Willows (Salix species), and some Viburnums (V. opulus and V. sieboldii).