Arizona Wild Flowers
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Paper Flower, Psilostrophe cooperi.

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Paper flower, Psilostrophe cooperi. Also Called: Whitestem Paperflower, Cooper's Paperflower, Paperflower, Riddellia cooperi. Arizona Wild Flowers. Pictures, Photos, Images, Descriptions, Information, Reviews.
Paper Flower, Psilostrophe cooperi.
Paper flower, Psilostrophe cooperi. Arizona Wild Flowers. Pictures, Photos, Images, Descriptions, Information, Reviews.Paper flower, Psilostrophe cooperi. Arizona Wild Flowers. Pictures, Photos, Images, Descriptions, Information, Reviews.
Paper Flower, Psilostrophe cooperi.Paper Flower, Psilostrophe cooperi.

Paper Flower.
Psilostrophe cooperi, Aster Family: ( Asteraceae ) ( Compositae ) also known as the Helenieae Family: ( Helenieae ), Paper Flower. Also Called: Whitestem Paperflower, Cooper's Paperflower, Paperflower, Riddellia cooperi.

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Paper Flower, Psilostrophe cooperi is a low growing, spreading, perennial bush; with pale green, hairy foliage. Its daisylike flower heads have 3 to 8 deeply toothed golden-yellow ray florets. The flower heads are often bunched together at the tops of the stems in a rounded spray.

The flowers persist for a time and then dry and become papery while maintaining their yellow color. Thus, their common name, Paper Flower.


Quick Notes:

Height: Up To About 24" Tall.

Flowers: Yellow flowers on stem terminals. When they dry they become paperlike. One inch wide flowers with 3 lobes on each end.

Flowering Time: March - Sept following rains.

Leaves: Very slender, linear up to 2 inches long and up to 1/2 inch wide, alternate, green top, underside silver, hairy when young.

Found: Native to the Mojave and Sonoran Deserts of California, the Southwestern United States, and northwestern Mexico. Found throughout lower elevations in Arizona.

Hardiness:
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Sun Exposure:
Full Sun

Elevation: 492 and 4,921 feet.

Habitat: Rocky slopes, mesas, sandy river bottoms, and washes in the deserts, and desert grassland ranges. An ideal xeriscape landscape plant in Arizona.

Miscellaneous: Flowering Photos Taken June 13, 2003. Date Creek, Arizona.

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