Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Conoclinium coelestinum

Blue mistflower, Wild ageratum, Blue boneset, Mistflower

Asteraceae (Aster Family)

Conoclinium coelestinum (Blue mistflower)
Marcus, Joseph A.
Mistflower grows to 3 feet high, but often lower, with leaves opposite, somewhat triangular in shape, and bluntly toothed. At the top of the plant the branches, with their short-stemmed clusters of flowers, form an almost flat top. Disk flowers are bright blue or violet, about 1/4 inch long. There are no ray flowers.

Blue Mistflower attracts bees and butterflies. However, this wildflower spreads quickly and can become a pest.

Image Gallery:

31 photo(s) available

Plant Characteristics

Duration: Perennial
Habit: Herb
Size Notes: 2-3
Leaf: Green
Size Class: 1-3 ft.

Bloom Information

Bloom Color: Blue , Purple
Bloom Time: Jul , Aug , Sep , Oct , Nov


USA: AL , AR , DE , FL , GA , IL , IN , KS , KY , LA , MD , MI , MS , MO , NE , NJ , NY , NC , OH , OK , PA , SC , TN , TX , VA , WV , DC
Native Distribution: NJ to s. IL & e. KS, s. to FL & TX
Native Habitat: Wood margins; stream banks; low woods; wet meadows; ditches

Growing Conditions

Water Use: Medium
Light Requirement: Sun , Part Shade
Soil Moisture: Moist
CaCO3 Tolerance: Medium
Soil Description: Moist loam, sand, or clay.
Conditions Comments: Blue mistflower is good as a border plant or as a colonizing groundcover. The fluffy-edged flowers are a magnet for late-season butterflies. It also spreads quickly and can become a pest.


Use Wildlife: This wildflower attracts bees and butterflies.
Conspicuous Flowers: yes
Attracts: Birds , Butterflies
Nectar Source: yes

Last Update: 2013-09-12