The cup and saucer vine (Cobaea scandens) is a fast-growing, perennial climber known for its striking and unique flowers. Native to Mexico, it thrives in warm climates and can reach heights of 10 to 20 feet (3 to 6 meters) in a single growing season. The vine is adorned with lush, green, pinnate leaves and tendrils that allow it to cling to supports such as trellises, fences, or walls.
The flowers of the cup and saucer vine are its most captivating feature. Blooming from late summer to fall, they start as green buds and gradually open into large, bell-shaped blossoms that resemble a cup sitting on a saucer, hence the name. Initially, the flowers are pale green or white, but they mature into shades of violet, purple, or deep blue. Each flower is accompanied by a saucer-like calyx that enhances its visual appeal.
Cup and saucer vines prefer full sun to partial shade and well-drained, fertile soil. They require regular watering, especially during dry periods, but should not be waterlogged. These vines are often grown as annuals in cooler climates, where they may not survive the winter. They are ideal for creating vertical interest in gardens, covering unsightly structures, or adding a touch of exotic beauty to any outdoor space.