Flowers-of-an-hour is a common name used to describe certain annual flowers which bloom for a short period of time. These delicate flowers are also known by various other names that include, but are not limited to, summer snapdragon, poached egg plant, bladder ketmia, and various species of wildflowers such as Abronia, Pentunia, and Oenothera. Regardless of what they are referred to as, these charming flowers typically produce beautiful blooms that can add color and beauty to any garden or landscape. Whether you prefer to call them flowers-of-an-hour or by any other name, there's no denying their striking beauty.