In this May 11, 2018, photo, Danielle Schumacher, CEO and co-founder of THC Staffing Group, a recruitment firm that encourages a more diverse cannabis industry workforce, smells some cannabis flowers at Berkeley Patients Group in Berkeley, Calif. Women have made inroads in the male-dominated cannabis business. But they still face a so-called grass ceiling as the industry grows and becomes more mainstream. (AP Photo/Marcio Jose Sanchez)