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Swiss Forest Protection (WSS)

We have an overview of the phytosanitary situation in Swiss forests at all times.


The Swiss forest Protection...

collaborates with the cantonal forestry services to collect data on the occurrence and extent of biotic and abiotic stresses in the forest, to provide information on the current phytosanitary situation in the forest, to advise the people concerned on questions of phytosanitary protection in the forest and to participate in the continuing education of the forestry services, the green sector, students and other specialists.



As the coordination of activities at the international level is becoming increasingly important, we also maintainan exchange of information with our colleagues in Switzerland and abroad. This enables us to act as an information platform and interface between research and practice.

We see ourselves first and foremost as service providers.


Since WSS offers its services (diagnostics and advice) only for Switzerland, the remaining pages of this website are only available in the official Swiss languages German, French and Italian.


Swiss forest protection - news

Nature against stress, medicine from the cold and the forest facing new challenges: The new issue of DIAGONAL is all about health.

Asexual fruiting body of Cryphonectria parasitica, the fungus that causes chestnut blight.  Photo: Lea Stauber, WSL

A study of the entire genome of the chestnut blight pathogen helps to better understand how invasive organisms can spread.

Photo: Reinhard Lässig / WSL

Bark beetles destroyed more than 1.4 million m3 of spruce wood in 2020. Beetle infestation is expected to remain high in 2021. (in German)

The very rare (20-30 breeding pairs) white-backed woodpecker (Dendrocopos leucotos) (Image: Simon Niederbacher)

A high level of biodiversity is important for forest management. The more diverse a forest is, the better it can cope with external influences.