How to Grow Cupflower

Nierembergia Germination Information

Nierembergia is the botanical name for Cupflower
Nierembergia Seed Germination How to Sow Nierembergia:
  • Best sown indoors at 70-75°
  • Sow 10-12 weeks before last frost and expect germination in 15-20 days
  • Can also be sown outdoors in the spring or summer, up to two months before first frost
  • In northern areas, grow as an annual
  • If sowing seed outdoors, we recommend a maximum planting depth of 4X the width of the seed

How to Grow Nierembergia:
Transplanting: Transplant when there are at least two sets of true leaves

Spacing: Site plants in full sun to light shade in a rich, light, moist, well-drained soil

Temperature Very tolerant of high humidity

Soil: Fertilize soil monthly with a balanced fertilizer

Additional Care: Deadhead and trim plants lightly after flowering

Appearance and Use:

Cupflowers are used in borders and rock gardens, as bedding and edging material, and in containers. Nierembergia hippomanica is a compact, mounded plant 6-12 inches tall with green, narrow spoon-shaped leaves to 3/4 inch long. All summer long it gets covered in 1 inch, cup-shaped flowers that are blue-violet with yellow throats. Nierembergia scoparia is also mounded, but is shrubbier and taller, from 2-3 feet. Its leaves are also similar, but longer, to 2 inches. The 1 inch, cup-shaped, summer-appearing flowers are white with a blue tint


About Nierembergia:
Pronunciation:  ne-rem-ber’ge-å
Lifecycle:  Perennial
Origination: Solanaceae; native to Argentina
Common Name: Cupflower