Pear net rust
Gymnosporangium sabinae
This description was machine-translated.
How to spot it
Pear net rust is a rust fungus with an alternate host: it overwinters on juniper and attacks your pear leaves in spring.
Noticeable are the bright orange‑red spots on the upper side and the net‑like outgrowths on the underside of the leaf.
Without a juniper within a few hundred meters of you, the fungus cannot complete its cycle.
Prevention
Remove infected juniper in your garden or cut out diseased juniper shoots, that most effectively interrupts the alternate host cycle.
Collect infected pear leaf litter and strengthen your tree with horsetail broth.
Choose young, robust pear varieties and plant them in an airy location to reduce the infection pressure.
Affected plants
These plants in our database are especially susceptible.
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