Pear rust is a fungus that affects pear trees. You can find out how to combat pear rust and prevent an infestation here.
Orange Spots
Pear rust appears from April and manifests itself as orange spots directly on the leaves. Since there is no other disease that manifests itself like this, you can be 100% sure that it is the grating. From July, the spots on the underside of the leaves change. Here warts form, which are provided with longitudinal cracks. The spores are carried by the wind and mainly settle on the juniper. A pear cannot infect another pear. These spores can be carried several hundred meters by the wind.
Fighting pear rust
If an infestation occurs again the following year, these spores are from a nearby juniper bush. An infestation can have very serious consequences for young fruit trees. Older fruit trees, on the other hand, do not need much care when infested. You can only prevent grating if you spray with fungicides during the flowering period. Alternatively, you can try plant strengtheners. Incidentally, the pear rust does not affect the fruit, so the pears are suitable for consumption. Another tip to avoid grating: plant robust and not susceptible varieties. The retailer knows what to do! Also check your juniper and remove infected areas.