Five Zero Trees - Your Pacific NW Premium Cannabis Provider Five Zero Trees is a place for OMMP card holders & recreational customers to access high quality cannabis in an inviting & safe environment. We have believed in this revolution for over 20 years and have a strong desire to help the cannabis community flourish for many years to come. 6 Portland area locations. Mule Entourage Keef Pruf Cultivar Smoky Flower Farms Higher Cultures Oregrown And many more.