Plants in genus conoclinium
Conoclinium coelestinum
Conoclinium coelestinum, also known as blue mistflower, is a perennial with clusters of blue-violet blossoms that attract butterflies, including Monarchs. It grows 2-3 feet tall and wide, thriving in moist, fertile soil with full sun to part shade. This plant is a late-season bloomer, adding color to gardens in USDA zones 6 to 11.
Conoclinium greggii
Conoclinium greggii, a heat-loving perennial native to the Southwest US, features light green foliage and blue-violet flowers. It blooms from July to December, growing up to 2 feet tall and 3 feet wide. This plant is less aggressive than its relative, Eupatorium coelestinum, and attracts butterflies and other pollinators.