My ornamental grape is has brown spots - Ask Extension
This is a fully mature ornamental grape. I have been in this house for 12 years and this is the first time I have seen this. The leaves show brown spo...
Knowledgebase
My ornamental grape is has brown spots #400636
Asked May 17, 2017, 5:18 PM EDT
This is a fully mature ornamental grape. I have been in this house for 12 years and this is the first time I have seen this. The leaves show brown spots then eventually wither and die. Can you tell me what this is and how to treat it? Do I have remove all the diseased leaves from the area?
Jefferson County Kentucky
Expert Response
The grape family can be susceptible to various diseases. The spotting could be one of several of which I am aware. I suspect black rot but it is impossible to be sure from a photo alone. Without having a sample (piece of vine with live affected leaves attached) to send to the lab, I can only recommend removing as much affected tissue (leaves and stems) as possible then spraying with a fungicide labeled for use on grapes. Repeat as recommended on the product label.
A simplified spray schedule is here with suggested fungicides: https://gallatin.ca.uky.edu/files/backyard_grape_spray_guide.pdf
Read and follow all label instructions before applying all pesticides.
Feel free to contact our office if you have other questions.
A simplified spray schedule is here with suggested fungicides: https://gallatin.ca.uky.edu/files/backyard_grape_spray_guide.pdf
Read and follow all label instructions before applying all pesticides.
Feel free to contact our office if you have other questions.
Let me know if I can help you further!
Carol Wilder
Horticulture Technician
Jefferson County Cooperative Extension Service
<personal data hidden>
200 Juneau Drive
