Late Boneset, Eupatorium serotinum is a fall-blooming, perennial about 3'-6' tall.  It grows in open sites (either dry or moist), and can hybridize with other members of the genus Eupatorium. Unlike wind-pollinated plants in this genus, E. serotinum is insect pollinated, of which it's flowers are very popular with a wide range of bees, wasps and other insects. It is also a host plant to native insect caterpillars. This plant provides late-season nectar for monarch butterflies and there is also evidence that pyrrolizidine alkaloids produced by E. serotinum are beneficial to Monarchs.
 
Native (with gaps) throughout NC. Click to see its range in North Carolina
 
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