Tall Water Parsnip is found in wet prairies and wetlands and can grow in standing water. The foliage that is grown beneath the waterline is deeply lobed and appears frilly, and the foliage produced above the water are simple and lightly serrated. It creates domes of pure white flowers. It sif found with Eutrochium maculatum, Iris virginica shrevei, and Leersia oryzoides.