Description : Nierembergia - Cup Flower (Nierember'gia)
Last Answer : DESCRIPTION: These are hardy and tender, perennial plants that may be dwarf or trailing and are good for the rock garden, or are taller and erect and make good plants for the flower bed or border. All ... creeping). Tender - N. frutescens; N. calycina (creeping); N. caerulea; N. Veitchii (creeping).