Oakland’s Purple Heart is one of the first dispensaries I ever visited after getting my medical marijuana card in 2011. Back then, cannabis stores didn’t flank every other corner of the city like they do now. I don’t even recall how I found the place, but as someone just starting her weed journey at the time, the unassuming storefront near Jack London Square balanced a professional yet accessible vibe that put me at ease. At the time, I didn’t realize the store’s history as Oakland’s longest-operating marijuana retailer and the fourth-oldest, still operating cannabis business in America.