A branch canker caused by species of Fusicoccum, including F. aesculi, causes some mortality, and root and crown rot caused by Phytophthora cinnamomi has destroyed entire stands of the manzanita and prevented its regrowth in patches of infested soil.
Arctostaphylos | Arctostaphylos uva-ursi | Arctostaphylos imbricata | Arctostaphylos glutinosa | Arctostaphylos glauca |