CUP FLOWER

FAMILY: Solanaceae | GENUS: NIEREMBERGIA

TYPE
  • Annuals
  • Perennials
SUN EXPOSURE
  • Partial Shade
WATER
  • Regular Water
PLANTING ZONES
  • US (Upper South) / Zone 6
  • MS (Middle South) / Zone 7
  • LS (Lower South) / Zone 8
  • CS (Coastal South) / Zone 9
  • TS (Tropical South) / Zone 10
  • TS (Tropical South) / Zone 11

Plant Details

These plants bear tubular flow- ers that flare into saucerlike or bell-like cups. The species listed here grow as a spreading mound or a ground-covering mat. All are covered with blooms during summer. Can be grown as perennials in the Lower South, cool-weather annuals in the Coastal and Tropical South, summer annuals elsewhere.

white cup

DWARF CUP FLOWER

nierembergia gracilis

  • Native to the Argenine desert, this species and its primary selection, 'Starry Eyes', endure hot summer, either arid or humid, growing into a mound 10 inches tall and 18 inches wide.
  • Plant in sun, with good drainage.
  • After the lavender-centered white bells fade, shear for more flowers.
  • Perennial in the Lower South, (USDA 8) and warmer.

nierembergia linariifolia(Nierembergia caerulea, Nierembergia hippomanica)

  • To 612 inches high and wide.
  • Much-branched, mounding plant with very small, stiff leaves.
  • Flowers are blue to violet.
  • Trimming back plant after bloom to induce new growth seems to lengthen its life.
  • Augusta Blue Skies is a compact hybrid with lavender-blue flowers and improved heat tolerance.
  • Plants may surprise you and overwinter in the Middle South, (USDA 7) and warmer.

nierembergia repens

  • Bright green foliage forms a mat to 46 inches high, 2 feet wide.
  • White blossoms.
  • For best performance, don't crowd it with more aggressive plants.
  • Not as heat tolerant as Nierembergia linariifolia.
  • However, plants can overwinter in the Middle South, (USDA 7) and warmer.

tall cup flower

nierembergia scoparia

  • Growing 12 feet tall, favorites include 'Purple Robe' and the white 'Mont Blanc', usually sold as Nierembergia hippomanica.
  • Plants may overwinter in the Middle South, (USDA 7) and warmer, so cut back, but don't pull them out at summer's end.

nierembergia Summer Splash series

  • Grows 1012 inches tall and 12 feet wide in both white and blue.
  • Tolerant of heat and humidity.

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