PHX: Raw Olives
Lots of older parks and neighborhoods have olive groves...we have trees in our neighborhood on the parkways for instance. I know at the olive mill they've said they have people who go out to the parks and other public trees and collect olives then bring them for pressing(need to have a certain weight).
When I lived in CA my mom would take us to a park not far from where we lived to harvest...then she'd cure herself.
I think it's too late to harvest olives however? (usually late summer and early fall?)