A Technical Report from The Bartlett Tree Research Laboratories

Ash yellows (AY) is a chronic, systemic disease that affects many North American ash species. White ash and green ash are the most commonly affected, but many other ash species may also be affected. It is spread from diseased to healthy trees by leafhoppers and other related sucking insects. Diseased trees exhibit an overall reduction in plant vitality that is similar to decline caused by environmental stresses.

Related Content

  • Services

We specialize in a variety of services. Our aim is to deliver the top level of customer service based on your requests.




P.O. Box 2340
Leesburg , VA 20177

Office Hours

Monday through Friday
8 a.m. – 4:30 p.m.


Schedule an appointment
with your local office today!

Toast Text Goes Here