Knowledgebase
bumps on honeygold apple tree leaves #869512
Asked May 21, 2024, 6:02 PM EDT
Carver County Minnesota
Expert Response
These look like leaf galls, essentially a tiny insect bites the leaf and a bacteria or virus infects cells causes a small tumor. This is not a signfiicant illnesss. some cases of over waering can look like that . https://mortonarb.org/plant-and-protect/tree-plant-care/plant-care-resources/plant-galls/
Leaf edema can also look lilke this but it always tyrb brown as water swelled cells in the leaf die. https://extension.usu.edu/planthealth/ipm/notes_orn/list-treeshrubs/oedema
I think it is galls. Send me another pic in a week.
Sent from my iPhone
On May 21, 2024, at 5:23 PM, Ask Extension <<personal data hidden>> wrote:
This may be helpful.
https://extension.umn.edu/plant-diseases/sooty-blotch-and-flyspeck#:~:text=Sooty%20blotch%20and%20flyspeck%20usually,the%20surface%20of%20the%20apple.&text=Both%20fungi%20are%20limited%20to,and%20do%20not%20cause%20rot.