Small genus of plants from sunny, moist areas in South America. Species include a spreading mound and a ground-covering mat. Both are blanketed with broadly cup-shaped blooms in summer. Beyond the hardiness range, treat these perennials as annuals.Nierembergia repens
Native to Andean and warm-temperate South America. This species grows as a mat to 4–6 in. high and 2 ft. wide, with bright green foliage and white blossoms. For best performance, don’t crowd it with more aggressive plants. Not as heat-tolerant as N. linariifolia.
From South Africa. Woody-based perennials that die to the ground in cold climates, remain shrubby in m...
Hybrids between the P. aequalis and P. capensis. ‘African Queen’ ha...
Evergreen or semievergreen vining shrub from China. Grows to 5 ft. tall. Dark green leaves are divided...