The Four OâClock Flower: An Old-Fashioned Favorite Author: Bi-Colored Four O'Clock Flowers sgbrown One of My Favorite Perennial Flowers The four o'clock flower is one of my all-time favorite flowers to grow in my yard. One of my neighbors had these beautiful, sweet-smelling flowers growing around a tree in her yard and I was commenting on how much I liked them. She then took me to the flower bed and proceeded to dig up a few of the plants. I planted those three little transplants and, within a few weeks, they were blooming like crazy. I was hooked! This article will provide growing and care tips for this lovely flower as well as information about its historical background.