Dutch elm disease is a fungal pathogen, infecting elm trees (Ulmus spp. and Zelkova spp.) spread predominantly by elm bark beetles (Scolytus multistriatus) but also through human-mediated spread of elm wood. Infected trees show wilting branches, leaves curl, turn yellow/brown and drop prematurely from the tree. Ultimately the tree will die due to clogged water-conducting tissues. Tree mortality can be as rapid as a few days.
To help protect our environment:
Infects elm trees (Ulmus spp. and Zelkova spp.)
Risk to amenity elm plants; Tāmaki Makaurau is estimated to have about 30,000 elm trees, including many iconic specimens in public as well as private gardens. Dutch elm disease also poses a risk to health and safety and property, as falling tree limbs can cause significant damage.
Cut down infected trees, mulch them and leave on-site for at least three months. Sterilise all associated equipment afterwards before moving it off-site.
For more information on Dutch elm disease, please contact Auckland Council at email@example.com.
CAUTION: When using any herbicide or pesticide please read the label thoroughly to ensure that all instructions and safety requirements are followed.