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Conoclinium coelestinum

Common Name(s):
Blue boneset, Blue mist flower, Hardy ageratum
Categories:
Native Plants, Perennials, Wildflowers
Comment:

This herbaceous perennial with showy blue flowers  is native to the southeastern United States.  Prefers moist humusy soils that do not dry out in full sun to partial shade areas.  Purplish stems have toothed deltoid leaves. Blueish purple flowers are fluffy, tubular (to 1/ 2” across) .  They form dense flat topped terminal clusters (corymbs). The nectar rich flowers are attractive to butterflies.  Does spread easily through rhiomes and can be weedy.   Cut back taller plants in spring to prevent flopping.  Consider for a wildflower garden or naturalized area, does especially well around pond boarders as long as spreading roots will not affect other plants.  It is extremely rhizomatous and not recommended for smaller planting areas.

Season:
July to October
Height:
1.5-3 feet
Flower Color:
blue
Foliage:
toothed deltoid shaped leaves
Flower:
bluish purple, tubular, showy
Site:
does well in wet areas; avoid planting in beds where it will compete with other less aggressive plants
Propagation:
rhizomes
Exposure:
full sun, partial shade
Soil:
fertile, humus, moist
Origin:
southeastern United States
Life Cycle:
perennial
Tags:
showy flowers, blue flowers, damp soil, wet areas

NCCES plant id: 2874

Conoclinium coelestinum Conoclinium coelestinum
Eleanor, CC BY-NC-2.0
Conoclinium coelestinum Conoclinium coelestinum
dbarronoss, CC BY-NC - 4.0
Conoclinium coelestinum Conoclinium coelestinum
TexasEagle, CC BY-NC - 4.0