Whorled Milkweed is a low-growing species with an upright habit. Long, narrow leaves whorl around the central stem, giving the plant a delicate look. Bright white flowers appear in round clusters at the top of plants. This forb attracts bees, wasps, butterflies, and skippers with its rich nectar content. Whorled Milkweed can spread aggressively by rhizomes in its preferred conditions, but does not tolerate competition from taller plants.