Pest Photo

Thomas Jung, Bugwood.org

Alder root and collar rot

Phytophthora alni

For more information about this plant pest, see the CAPS data sheet.

Survey Maps

10/2019 - IDphy: molecular and morphological identification of Phytopthora based on the types
11/2018 - New outbreak of killer tree disease in south west Scotland
6/2016 - Estimating the Susceptibility to P. alni Globally Using Both Statistical Analyses and Knowledge

Approved Methods for Pest Surveillance