Dee from Geneva Ohio writes
I know I need to remove the damaged part and burn it, but does your product kill the black fungus that forms on plum trees? If so what system do you suggest i use... How often etc.. Thanks
We recommend identifying the fungus that your plum tree has. If you're dealing with black knot, Bonide Liquid Copper Fungicide Concentrate is not labeled for it. According to articles by Ohio State and the University of Maine, this is a fungus that can't be treated but there are a few things that can be done, one thing mentioned is using Chlorothalonil which can be found in Fung-Onil Multi Purpose Fungicide Concentrate which can be used on plum trees but it's also not labeled for this type of disease. We recommend reading over these articles and consulting with your local extension office. https://ohioline.osu.edu/factsheet/plpath-fru-31 https://extension.umaine.edu/ipm/ipddl/publications/5091e/
Answer last updated on: 04/24/2019
