They are very sensitive to the fungal disease Phytophthora cinnamomeum.

This disease is caused by pathogen Phytophthora cinnamomi.

A trial in Western Australia showed Banksia marginata to be mildly sensitive to Phytophthora cinnamomi dieback.

Recent research suggests that A. pulchella may in some circumstances suppress the plant pathogen Phytophthora cinnamomi.[1]

In this project we will focus on four such tree species and their associated invasive pathogens: elm and Ophiostoma novo-ulmi, ash and Chalara fraxinea, alder and Phytophthora alni and oak and Erysiphe alphitoides/Phytophthora cinnamomi.

It is rare and endangered in its natural habitat, with all major populations currently threatened by Phytophthora cinnamomi dieback, a disease to which the species is highly susceptible.

In addition, the accidental introduction and spread of plant pathogens such as Phytophthora cinnamomi (dieback) pose a serious threat to the genus's habitat and biodiversity.