Boxwood samples have been coming into the Plant Diagnostic Laboratory on a daily basis since the winter. Most of them have been diagnosed with winter damage, boxwood leafminer, or Volutella stem and leaf blight. Yesterday, we got our first sample with boxwood blight! The situation was typical of several others in New Jersey – new transplants this spring and then a bunch of dead shrubs mid-summer.
Just a short note today to keep you on your toes! And by the way, please notice how the sample was submitted – an entire plant, double-bagged…
I heard through the grapevine about a site with some dead boxwoods, so I went to take a look and here is what I saw.
Samples of boxwood infected with the fungus Cylindrocladium pseudonaviculatum, the cause of boxwood blight, have been confirmed by the Rutgers Plant Diagnostic Laboratory and the New Jersey Department of Agriculture Laboratory in recent days. This is the first report of the disease is New Jersey.