Perennials: - Swamp milkweed (Asclepias incarnata) - Joe-Pye weed (Eupatorium maculatum) - Rose mallow (Hibiscus moscheutos) - Siberian iris (Iris sibirica) - Blue flag iris (Iris versicolor) - Rodgersias (Rodgersia spp.) - Globeflowers (Trollius spp.) - Ligularias (Ligularia spp.) - Cardinal flower (Lobelia cardinalis) - Japanese primrose (Primula japonica) [2] Shrubs and trees: - Red-osier dogwood (Cornus sericea) - Willows (Salix spp.) - Swamp azalea (Rhododendron viscosum) - Blueberries - Summersweet - Spicebush - Witch hazel [2][5] Other moisture-loving plants include astilbes, turtleheads (Chelone spp.), marsh marigold (Caltha palustris), and forget-me-not (Myosotis scorpioides) [1][2]. It's important to choose a variety of species adapted to the specific soil conditions. Plants should be able to tolerate both very wet and dry periods, as rain gardens and areas with high groundwater often experience these extremes [3]. Native species that originated in similar soil conditions are likely to flourish [4]. When planting in wet soils, avoid compacting the soil by minimizing tilling and walking on the planted areas [5]. Improving drainage with organic matter and grit can also help create better growing conditions for a wider range of plants [6].