TROPICAL PLANT ENCYCLOPEDIA
Nierembergia sp.
CupflowerFamily: Solanaceae
USDA Plant Hardiness Zone Map
This excellent ground cover plant has early, bright blooms of blue-violet or dark purple. The mounding foliage has a fern-like appearance, is vigorous, and free-flowering all summer long.
The Cup Flower plant is considered a perennial in zones 7 - 10 but it can be grown as an annual in cooler zones.
Link to this plant:
https://toptropicals.com/catalog/uid/nierembergia_sp.htm