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NC Native Plant Society:
Plant Details

Conoclinium coelestinum [= Eupatorium coelestinum]

Mistflower, Ageratum, Hardy Ageratum, Blue Boneset

Scientific Name:

Conoclinium coelestinum [= Eupatorium coelestinum]

Genus:

Conoclinium

Species Epithet:

coelestinum

Common Name:

Mistflower, Ageratum, Hardy Ageratum, Blue Boneset

Plant Type

Herb/Wildflower

Life Cycle

Perennial

Plant Family

Asteraceae (Aster Family)

Native/Alien:

NC Native

Invasive Status:

(*Key)

Size:

1-3 ft.

Bloom Color(s):

Blue, Purple

Light:

Sun - 6 or more hours of sun per day, Part Shade - 2 to 6 hours of sun per day

Soil Moisture:

Moist, Wet

Bloom Time:

July, August, September, October

Growing Area:

Mountains, Piedmont, Coastal Plain

Habitat Description:

Moist to wet disturbed areas, especially ditches, probably more common than formerly. Scarce in NC mountains, common in piedmont and coastal plain.

Leaf Arrangement:

Opposite

Leaf Retention:

Deciduous

Leaf Type:

Leaves veined, not needle-like or scale-like

Leaf Form:

Simple

Life Cycle:

Perennial

Wildlife Value:

Has some wildlife value

Landscape Value:

Suitable for home landscapes

State Rank:

S5: Secure (*Key)

Global Rank:

G5 - Secure (*Key)

Notes:

Colonial and a rapid spreader.

In full flower in early October

Garden in Orange County, NC

Bettina Darveaux

Close-up of inflorescences

Garden in Orange County, NC

Bettina Darveaux

Mature seed heads in late November

Garden in Orange County, NC

Bettina Darveaux

Links:

USDA PLANTS Database Record

https://auth1.dpr.ncparks.gov/flora/plant_list.php

https://plants.ces.ncsu.edu/plants/conoclinium-coelestinum/

https://www.wildflower.org/plants/result.php?id_plant=COCO13



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