Cobaea scandens Cup and saucer vine (Cobaea scandens) is a perennial climber native to subtropic regions of Mexico. It features thin, lightweight leaves and purple flowers that resemble the shape of a cup or bell, hence the unique name. This vine is a vigorous, rapid grower that can reach up to 30 or 40 feet in its natural environment.
Start seeds indoors in the winter, then move the seedlings outdoors after the final frost in spring. Although cup and saucer vine takes awhile to start blooming, its foliage will quickly create a screen, grow over an arbor, or cover an unsightly fence.
The plant has plentiful bright green leaves that are oblong in shape. The cup-shaped flowers are pale green as they start to open, but then turn purple or white as they mature. The buds have a somewhat unpleasant scent, but once fully opened, the flowers develop a floral-honey fragrance.
Cup and Saucer Vine Care
Cup and saucer vine grows so quickly that it’s usually started from seed rather than from nursery plants. Direct-sow seeds in the garden in spring after all danger of frost has passed, or get a head start on your seasonal garden by starting seeds indoors six to eight weeks before your last frost in spring.