Plants in the genus Juncus are known as rushes and reside in the Juncaceae family. Rushes favor the edges of ponds, bogs and low moist areas. They do well in boggy soils but are also reliable growers under fluctuating water conditions. Because they can ride out intermittent dry spells, they’re useful for rain gardens, bioretention and other features where water conditions are a variable. Their understated vertical elegance catches the eye when contrasted with ornamental grasses or flowering perennials. As an architectural element, they add style to modern landscapes and buildings.