Knotted Rush (Juncus Nodosus) is a perennial grass in the Juncaceae family with easy care difficulty. It requires high watering and full sun or partial shade light in USDA hardiness zones 3-9. This plant is safe for cats and dogs.

Juncus nodosus, commonly known as Knotted Rush, is a perennial grasslike herb native to much of North America, thriving in wet habitats such as marshes, wet meadows, and shores of lakes and rivers.