You probably know orchids as the big, colorful flowers found in grocery stores and given as housewarming gifts. But those tropical beauties represent only a fraction of the estimated 25,000 orchid species worldwide. While their showy relatives fly off the shelves, North America’s more understated native orchids are disappearing in the wild. Scientists at the Smithsonian Environmental Research Center are working to protect these orchids and their habitats, but first they need solve a surprisingly difficult problem: how to grow one.