Answer: There are a number of trees and shrubs suitable for growing in damp or wet soils, and a few ornamental grasses, as well. Metasequoia (Dawn Redwood), Aspen, Phyllostachys nigra (Black Bamboo), Felipendula (Martha Washington Plume), Pontederia cordata (Pickerel Weed), Butomus umbellatus (Flowering Rush), Iris laevigata, Arrowhead, Kaffir Lily, Michaelmus daisy, Viburnum opulus (Snowball Bush), Caltha palustris (Marsh Marigold), and Cornus alba 'Elegantissima' (Red-barked Dogwood). Other shrubs, trees, and grasses are listed in Sunset Western Garden Book (available in libraries and bookstores). Hope these suggestion get you started in the right direction!
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