Mozzie Buster (Pelargonium citrosum 'Van Leenii') is not famous in Thailand, but famous in abroad such as Australia, USA, Canada, Japan and Singapore. It is perennial shrub with fragrant leaves. Mozzie Buster is marketed as “Mosquito plant” because it helps naturally repel Mosquitoes and safe for environment, human and animal. Mozzie Buster can propagate by shoot cutting. But shoot cutting has slowly growth and get a few plants. Mozzie Buster can’t propagate by seed, but it propagates by in vitro (Poungpech 2551). Propagation by in vitro can’t rooting in normally MS media cause Mozzie Buster is weak when bring it grow in normally environment. Therefore, This experiment was study about plant growth regulators (PGRs) affect to rooting of Mozzie Buster.