The 9 o'clock plant is a type of flowering plant that is native to the Mediterranean region. The name of the plant comes from its habit of blooming at around 9 o'clock in the evening. The plant is also known by other names, such as night-flowering catchfly and lady's clock. The 9 o'clock plant is a popular garden plant and is often used in floral arrangements. The plants typically bloom from late spring to early summer.