Are you having this issue with your rhododendrons? Derek Binding, a local arborist, and Dr. Nicholas Brazee, the plant pathologist who looks at all the sad samples coming into the lab at the UMASS Amherst Extension explain. Nick wrote an article in the recent "Hort Notes" publication about this (volume 362) and here's an excerpt: "Winter injury on evergreen shrubs can manifest in several ways and usually becomes visible in late February through March. For rhododendron, leaves that naturally cur