Grape leaf insect or disease? What is it? - Ask Extension
I have attached pictures of my concord grape leaves. I get this each year. Don't know what it is so don't know how to treat it. At the moment there we...
Knowledgebase
Grape leaf insect or disease? What is it? #337518
Asked June 28, 2016, 6:34 PM EDT
I have attached pictures of my concord grape leaves. I get this each year. Don't know what it is so don't know how to treat it. At the moment there were only about 10 leaves affected. Can you identify this? Pictures represent front and back of the same leaf. Thanks!
Monmouth County New Jersey
Expert Response
At first glance it looks like a gall outbreak which are usually caused by insect feeding. It could be Phylloxera or Vitisiella. You might want to take your sample in to the Monmouth County Extension office for a more accurate diagnosis and treatment.
Address: 4000 Kozloski Rd, Freehold, NJ 07728
