Kwiminyaka emithathu edlulileyo, ii-United Voices for Healthier Communities zatyala imithi engama-7,000 kwiindawo ezingama-30 kulo lonke elaseMazantsi eCalifornia. Kulo nyaka, California Urban Forests Council uceba ukutyala 3,400 imithi San Diego, i Fresno kunye Central Coast ngokusebenzisa inkqubo.
I-CAUFC iqesha uMphathi weNkqubo yethutyana ukuba aphumeze lo msebenzi. Ngolwazi oluthe vetshe, jonga inkcazo epheleleyo yendawo engezantsi.