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Cup Flower
Scientific Name: Nierembergia hippomanica ssp. violacea Miers
Family: Solanaceae
Cup Flower (Nierembergia hippomanica ssp. violacea)
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Nierembergia 'Purple Robe'
Recommended Temperature Zone:
sunset: 8-31
USDA: 9-10

Frost Tolerance: Hardy in Phoenix

Heat Tolerance: Resistant, with sufficient water, will bloom all the summer.

Sun Exposure: Full sun to light shade

Origin: South America

Growth Habits: Perennial to 10 inches tall (25 cm)

Watering Needs: Regular water, but fairly drought resistant

Propagation: Seeds, will self seed

The Nierembergia forms a dense mat of rich purple or white, cup shaped flowers. It is heat and drought resistant, and will bloom all the summer in Phoenix if watered regularly. It is a good plant for a piece of bad soil, under a tree or other difficult situations.
Cup Flower (Nierembergia hippomanica ssp. violacea)

Blooming Habits:
The Nierembergia blooms pretty much all year in Phoenix, with more flowers in March to October. The paper-like flowers are either purple or white.

Sow indoor at 70 to 85F (21 to 29C) or sow in place. Plant 10 week seedlings 6 inches apart (15 cm).

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