I also have Conoclinium coelestinum, I am tired of fighting it.    From Wordnik.com.  [September Bloom Day 2009 « Fairegarden] Reference

The Conoclinium coelestinum is long gone here….but when it blooms it sure is lovely!.    From Wordnik.com.  [First Frost Of Fall « Fairegarden] Reference

Spotted sipping on the wild ageratum, Conoclinium coelestinum, is our first image of a monarch butterfly this season.    From Wordnik.com.  [Whoa Nellie!* « Fairegarden] Reference

She is surrounded by the native wild ageratum, Conoclinium coelestinum inherited with the property and planted with bronze carex self sown seedlings.    From Wordnik.com.  [First Frost Of Fall « Fairegarden] Reference

(In the photo above, Indigo Spires is mingling with spinach that is going to seed) (Blue mistflower, or Eupatorium (Conoclinium) beginning to bloom.).    From Wordnik.com.  [Statesman - AP Sports] Reference

"Eupatorium (Conoclinium): In many versions to attract fall butterflies to their flowers.    From Wordnik.com.  [Statesman - AP Sports] Reference

…and blue mist flower, Conoclinium coelestinum.    From Wordnik.com.  [September Bloom Day 2009 « Fairegarden] Reference