What is causing the black leaves on hydrangea?

Asked September 6, 2020, 2:54 PM EDT

Please help!

Macon County North Carolina

1 Response


Diseases that might cause your leaves to run black are alternaria, or Bacterial wilt of bacterial spot. Here's a good publication about diseases of hydrangea.

It might be wise to give me a call 828 349 2049 or email me at clbreden@ncsu.edu so we can talk further in an attempt to determine the exact disease that you have.