Three's Company Clip: Helen's Can of Biss

From season 2 episode 22 "Days of Beer and Weeds"
The trio sacrifices a weekend to clean the Ropers' garden, after he threatens to raise their rent if they do not. They find some attractive weeds, some of which Mrs. Roper uses in her plant which she enters in a flower-arranging contest sponsored by her flower arranging class. Larry comes to the apartment and says that the leaves they have are from cannabis plants. They call the Ropers, who are at the contest. Mr. Roper deliberately damages Mrs. Roper's plant that is about to be judged in order to prevent it being examined. This infuriates Mrs. Roper. She becomes even more furious when her teacher comes around for the judging and informs her that the weeds were not marijuana weeds after all. Janet confirms that, then says that some of the other leaves that they have are cannabis.