So what gives? Is the locust an aggressive outsider, or a longtime local? The answer is far from clear. In fact, the U.S.

The thing about summer rain is that some areas get enough soakings to keep plants growing while others – sometimes very nearby – miss every last downpour. Whether spotty or widespread, extended dry ...

The coming of autumn often makes trees harder to identify — but sometimes, it does the opposite. The black locust (Robinia pseudoacacia) is a case in point. In summer, its bluish-green, oval-shaped, ...