Researcher looks for honeysuckle blight
A message from Dr. Richard L. Boyce:
As I noted last year about this time, this year I’m again seeing a lot of honeysuckle leaf blight on Amur honeysuckle (Lonicera maackii) in the Cincinnati area. One additional wrinkle is that I’m now seeing it in an area where I’ve also found a lot of dead honeysuckle. This is an area called Woodland Mound Park, just east of Cincinnati, where I’ve been working since 2005. I did not collect data there last year, so I don’t know if the leaf blight led to these particular honeysuckles dying, but let’s just say that circumstantial evidence is high, since there was a lot of blight all over the area last year. This is also the first time I’ve seen enough dead honeysuckles to notice (mainly medium-sized bushes a few feet high).
Once again, I’ve mainly seen the blight on vigorous growth, i.e., on stems that haven’t yet lignified.
I would ask you to again report any sightings of leaf blight you see on any honeysuckle species. I’ve included a couple of pictures that may help. I spent the last two weeks in in New England, where I mainly saw Tatarian and Japanese honeysuckle, and I didn’t notice any leaf blight there.
Richard L. Boyce, Ph.D.
Director, Environmental Science Program
Department of Biological Sciences, SC 150
Northern Kentucky University
Highland Heights, KY 41099 USA