Lady Bird Johnson Wildflower Center - The University of Texas at Austin information

 Native Plant Database

Zinnia grandiflora (Rocky mountain zinnia)
Bransford, W.D. and Dolphia

Zinnia grandiflora Nutt.


Rocky Mountain zinnia, Little golden zinnia, Yellow zinnia, Plains zinnia, Prairie zinnia

Asteraceae (Aster Family)



This low-growing perennial is a 6-8 in., mound-shaped plant with numerous bright-yellow, 3- to 6-rayed flowers. There are usually several, much-branched stems from a woody base, making the plant almost shrub-like. Tiny, needle-like leaves form a mossy mat when plant is not in bloom. Several short, leafy, slightly woody stems in a low, round clump have numerous small flower heads with 3-6 nearly round yellow-orange rays.

The genus “zinnia” was named by Linneas in honor of Johann Gottfried Zinn. Zinn was a German anatomist, ophthalmologist, and botanist born in 1727 and died in 1759 (in Germany). He was extraordinary professor of medicine and director of the botanical gardens in the university town of Gottingen. He was one of the first to render an accurate description of the eyeball and he investigated the vessels and nerves of the eye cavity. He collected seeds of Z. elegans (from which the garden Zinnia descends) in Mexico. There he was accosted by bandits who, after searching his bag, left him alone, believing him crazy and therefore unlucky.

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Plant Characteristics

Duration: Perennial
Habit: Shrub
Flower: Flower 1 inch
Fruit:
Size Class: 0-1 ft.

Bloom Information

Bloom Color: Yellow
Bloom Time: May , Jun , Jul , Aug , Sep , Oct

Distribution

USA: AZ , CO , KS , NM , OK , TX
Native Distribution: KS to NV, s. to w. TX, AZ & n. Mex.
Native Habitat: Dry, calcareous slopes & mesas
USDA Native Status: L48(N)

Growing Conditions

Water Use: Low
Light Requirement: Part Shade
Soil Moisture: Dry
Soil Description: Dry, calcareous soils. Sandy Loam, Sandy, Gravelly, Limestone/chalky, Limestone-based, Caliche type.
Conditions Comments: This plant is ideal for dry, gravelly rock gardens, parkways, and medians, as well as well-drained flower gardens. Because it spreads by rhizomes, plains zinnia is also good for erosion control on steep, sandy slopes. Its color lasts most of the summer.

Benefit

Use Ornamental: Showy, Erosion control, Rock gardens, Perennial garden, Border, Rocky hillside
Use Wildlife: Rocky Mountain zinnia attracts butterflies. Flowers-Butterflies & moths, Flowers-Syrphid flies, Pollen-Butterflies , Pollen-Moths, Pollen-Bees, Nectar- bees, Nectar- butterflies, Nectar-Moths, Nectar-Butterflies, Nectar-Bees
Conspicuous Flowers: yes
Deer Resistant: High

Last Update: 2012-06-02