Here you can request to determine the cause of the damage. You can view the requests of other users and sort them according to the selected criteria. In addition, you can get information about your request, and you can follow the progress of its current state. If your application was not approved, it had probably been because it was impossible to identify the damage based on the sent photos or because the application does not address our topic - determining the pests of trees and shrubs. We will inform you about the status of your application by email.
Recurring every year, starting from late July with fast deterioration of the foliage towards autumn.
Answer
Dear Piotr, thank you for your question. In autumn, this kind of leaf drop can be partly natural/seasonal, but it may also be contributed to by foliar fungal pathogens—for example, Phyllosticta magnoliae or related species.
Best regards, Milan Zubrik
Insect eggs located on the trunk of plum shrub (close to the ground level)
Answer
Dear Piotr, thank you for your inquiry. The insect in the photo is a scale insect, most likely Sphaerolecanium prunastri, which commonly occurs on plum trees. Best regards, Milan Zubrik
Thank you for your question. The damage is caused by Zygiobia carpini, a gall midge that forms elongated galls on hornbeam leaves. It affects the appearance but usually does not seriously harm the tree.Best regards, Milan Zúbrik
