Fern Bar

Fern bar, in American slang, is an upscale or preppy bar or tavern catering to singles, usually decorated with ferns or other greenery, as well as decor such as Tiffany-style lamps. They were gathering places for well-dressed "upscale" young men and women, initially during the sexual revolution of the 1970s—during which the phrase "fern bar" came into common regional usage—and later the yuppie era... (Wikipedia)