Three's Company: Days of Beer and Weeds

Three's Company: Days of Beer and Weeds
ABC
February 21, 1978
Sitcom
DVD
B

This is a fairly seamless blend of Man About the House's "beer" and "pot" stories, of course written by NRW.  They obviously have to get florist Janet out of the apartment before Larry shows up and misidentifies the plant as cannabis (while ironically missing the actual cannabis in Chrissy's bouquet).  Note that so far all of Larry's appearances are in Americanizations of MAtH episodes.  I don't recall when he has his first appearance in an original story.  That said, as the series went on, a smaller percentage of the episodes were conversions.

Desk Sergeant David Tress would return as Virgil.