“Sometimes the adult psyllids can be very numerous in window screens in late summer or fall. It might be annoying, but these ...

I was standing at Pavilion 1 in Lancaster County Central Park one day early in June when a hackberry butterfly landed on my left arm. Immediately its long, straw-like mouth came out and I could feel ...

Also known as the canyon hackberry, the netleaf hackberry (Celtis laevigata, Celtis reticulata) is one of our native riparian trees. It grows large, 30-50 feet, depending on the regularity of watering ...

Ms. Renkl is a contributing Opinion writer who reports from Nashville on flora, fauna, politics and culture in the American South. Hackberries are native to Alabama, where I grew up, but I was a child ...

Hackberry emperor butterflies take flight at the entrance to the Roth Trailhead at the University of Kansas Field Station. A crowd slowed traffic one recent morning on a road north of Lawrence, but it ...