Answer: What plants to install will depend on the exposure the bed receives--is it full sun, partial sun, or full shade? Choose plants with the same sun needs. Without that important piece of info, it's hard to for me recommend specific plants. Extremely wet soil is usually a challenging condition, as plant roots require oxygen to thrive and if soil is too wet, they can easily rot. So, you will also need to choose plants that prefer wet soil conditions. Columbine likes wet soil and full sun or filtered shade. Some other plants that take very wet soil are many different iris, Japanese iris, Louisiana iris, Siberian iris, yellow flag, swamp sunflower (Helianthus angustifolius), sweet woodruff, monkshood, baneberry, swamp milkweed, and false spiraea. After you plant, put down a 3 inch layer of mulch on the soil. This will reduce the weeds that germinate, especially if you keep pulling any that appear as soon as possible.
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