The duties and responsibilities of a cannabis trimmer are to ensure that the marijuana buds are free of leaf material and have a uniform look for retail sale. There are several different methods for marijuana trimming, including wet, dry, and machine trimming. Wet trimming is done as soon as the cannabis is harvested. This is the stickiest but most traditional method. Dry trimming is done after the cannabis has dried but before it cures. Some companies are starting to utilize mechanical trimming machines, which reduces the need for trimmers, however, these machines are still too expensive for most operations.