In an effort to reduce pesticide use in 2013, the City of Palo Alto will not be providing pest control measures on public trees this year. Residents interested in pesticide applications on public trees will be encouraged to contact the Urban Forestry section for a public tree care permit allowing them to obtain services from a private certified pest control applicator (PCA) at their own expense. Please call (650) 496-5953.
Change habitat to make it incompatible with pest development. Examples – plant trees at or slightly above grade to reduce crown rot problems, clear bay trees away from specimen Coast live oaks where Sudden Oak Death is a problem.
Pesticides are only used as a last resort and only when pest monitoring indicates they are needed. The city arborist will make a determination for when a treatment may be required (e.g. certain number of pests per leaf, level of honeydew present) and how it will be implemented. Pesticides used must be the least toxic, most target-specific and effective materials available.