Three's Company S02E22 - Days of Beer and Weeds

When Chrissy, Jack, and Janet are strong-armed to clean out the yard behind the Roper's apartment building, Chrissy discovers some flowers that she brings back to their apartment. When Mrs. Roper sees how pretty they are, she decides to pick some herself to use in her flower arrangements. However, when Larry tells Jack and Chrissy that one of the plants is cannabis, they are frantic to get Mrs. Roper before her arrangement gets judged at her class.