Conoclinium coelestinum (Blue Mistflower) is an upright, spreading perennial boasting an abundance of small, fluffy, bright blue or violet flowers held in flat clusters in midsummer to late fall. The ageratum-like blossoms are carried atop purplish stems and attract impressive numbers of bees and butterflies. They grow above the dense foliage of coarsely-toothed, somewhat triangular, bright green leaves. Native to the central and southeastern United States, Blue Mistflower adds color to the late season garden when many other plants are starting to fade. However, this wildflower spreads quickly and can become a nuisance. Great as a colonizing groundcover in moist natural landscapes or for erosion control.

• Grows up to 18-36 in. tall and wide (45-90 cm). Can spread aggressively by rhizomes and self-seeding.
• Performs best in moist, fertile, humus-rich, well-drained soils in full sun to part shade. Tolerates wet soils.
• Great for wild flower gardens, prairies and meadows, rain gardens or along streams and ponds.
• No significant pest or disease issues. Keep an eye out for powdery mildew. Tall plants may be cut back in summer to prevent flopping.
• Propagate by root division or by seed. Sow seeds in fall or provide cold stratification. Can also be propagated by softwood cuttings taken in late spring.
• Native to the central and southeastern United States, West Indies.