In California forests, the pathogen often spreads to oaks though bay laurel trees, whose leaves are highly infectious. Three separate lineages of Phytophthora ramorum have been detected in ...

Avocado trees are a popular fruit tree grown in Brevard County ... The ambrosia beetle has been found to kill other trees in the laurel family, such as avocado (P. americana), swamp bay (P. palustris) ...