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Rocky Mountain Zinnia, Prairie Zinnia
Scientific Name: Zinnia grandiflora Nutt.
Family: Asteraceae
Rocky Mountain Zinnia, Prairie Zinnia (Zinnia grandiflora)
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Zinnia grandiflora, Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 466.
Recommended Temperature Zone:
sunset: All zones

Sun Exposure: Full sun

Origin: USA, rocky mountains, 4000 to 6000 feet elevation (1200-1800 m)

Growth Habits: Herbaceous perennial, clump forming, 4 to 6 inches tall (10-15 cm), 12 to 20 inches spread (30-50 cm); narrowl leaves, up to 1 inch long (2.5 cm), 0.12 inch wide (4 mm)

Watering Needs: Little to no water, when established, needs good drainage, tolerates some drought

Propagation: Seeds

Blooming Habits:
Showy profusion of bright yellow flowers, with orange center, up to 1.6 inches in diameter (4 cm), in summer (June to September). When the flowers are spent, they turn a light brown and dry in place.

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