| Armillaria root rot | |
|---|---|
 Armillaria luteobubalina, widespread in Australia, is a primary cause of Eucalyptus tree death and forest dieback resulting from Armillaria root rot. | |
| Causal agents | Several species of the genus Armillaria |
| Hosts | Several tree species |
Armillaria root rot is a fungal root rot caused by several different members of the genus Armillaria. The symptoms are variable depending on the host infected, ranging from stunted leaves to chlorotic needles and dieback of twigs and branches. However, all infected hosts display symptoms characteristic of being infected by a white rotting fungus. The most effective ways of management focus on limiting the spread of the fungus, planting resistant species, and removing infected material. This disease poses a threat to the lumber industry as well as affecting recreational areas.