Lateflowering thoroughwort

Clusters (corymbs) of white flowers now adorn laterflowering thoroughwort (Eupatorium serotinum). This member of the aster (Asteraceae) family lacks petals but still is quite showy and attractive to butterflies and other pollinators.

This plant of moist places grows thickly in sun and tends to sprawl more in shadier spots like near the wetland crossover bridge at the Oslo Riverfront Conservation Area …

Often, but not always, the opposite leaves hang down. Its leaves are stalked, have serrated leaf margins, and are a grey-green color.

Also known as late boneset, this plant grows to be 5′ tall or taller and is pictured below in the upland set aside area along Oslo Road at the Audubon House.