Rose bush leaves/insects? - Ask Extension
Our tea rose bushes have many healthy roses and buds. The leaves however are starting to look diseased. Many small holes and brownish spots. Same thi...
Knowledgebase
Rose bush leaves/insects? #872417
Asked June 10, 2024, 12:48 PM EDT
Our tea rose bushes have many healthy roses and buds. The leaves however are starting to look diseased. Many small holes and brownish spots. Same thing happened last year. I do use BioAdvance rose and flower care.
Ramsey County Minnesota
Expert Response
Not a disease but rather an insect issue. Looks like roseslug damage. If you can see the little green worms/larvae, you could treat with an insecticide. If they have already matured and gone , there is no benefit to treating. Here is a link for more direction on managing the situation. https://extension.umn.edu/yard-and-garden-insects/sawflies#roseslug-1044161
