Species include a spreading mound and a ground-covering mat. Both are blanketed with broadly cup-shaped blooms in summer. Beyond hardiness range, treat these perennials as annuals.Nierembergia repens
Native to Andean and warm-temperate South America. This species grows as a mat 4 to 6 in. high, 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 Nierembergia linariifolia.
From Asia. Grassy tufts grow to 8 in. high, 1 ft. wide. Spreads slowly and does not make a solid cover...
Forms a clump to about 2 ft. tall and wide. Glossy bright green, kidneyshaped, scalloped, or shallowly...
Hybrids between the P. aequalis and P. capensis. Grow 2-4 ft. high and wide. Mostly ...