Black Locust: Yet another invasive tree species found in Vancouver

The Problem With Invasive Black Locust Trees in Vancouver, WA (And What Homeowners Should Know) The Black Locust (Robinia pseudoacacia) is one of the most aggressively spreading tree species now appearing throughout residential neighborhoods in Vancouver, WA. While it may seem harmless at first glance—showing off fragrant white flowers in late spring—this species is classified […]