Hidden Away in the Mountains of Silverado Canyon, OC, yet just a 15-minute drive from Irvine, The Greenhouse at PNOC is a private venue that offers natural, unique and authentic space. All Nature & Nostalgia - The Greenhouse PNOC is a gem! Seated inside of an authentic working plant nursery, gorgeous mountain views at every turn, a completely unique space, & a natural canvas where you can chart your wedding proposal or dream wedding.