Cannabis flower essential oil, also known as hemp essential oil, is an essential oil obtained by steam distillation from the flowers, panicles (flower cluster), stem, and upper leaves of the hemp plant (Cannabis sativa L.). Hemp essential oil is distinct from hemp seed oil (hemp oil) and hash oil: the former is a vegetable oil that is cold-pressed from the seeds of low-THC varieties of hemp, the latter is a THC-rich extract of dried female hemp flowers (marijuana) or resin (hashish).