• This Quickscan was prompted by the finding of Austropuccinia psidii on plants for planting of Syzygium from China.

• Austropuccinia psidii infects many species within the Myrtaceae family.

• Austropuccinia psidii is not known to be present in the EU.

• The fungus can likely establish in parts of the EU that have an oceanic or humid subtropical climate and where host plants are (more than incidentally) present. There is uncertainty about the ability of the fungus to survive in areas with a plant hardiness zone 8 or lower but in these areas host plant are usually absent outdoors or only incidentally present because of their generally low winter hardiness.

• Impact may especially occur in Eucalyptus plantations (growth reduction and shoot dieback especially in young trees) in areas with an oceanic climate or humid subtropical climate. The impact may depend on the A. psidii strain. Several strains are distinguished which may have