Utah State University

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Holodiscus dumosus
Common Name Rock Spirea (Mountain Spray)
Family Rosaceae (Rose Family

 

Description This member of the rose family can grow to almost 2 meters tall. Its prolific blooms of white flowers are remeniscent of spirea. The leaves and twigs are covered in fine, soft hairs. The leaves are ovate and are deeply lobed.

Range

Occurs throughout the intermountain west, north to Wyoming and south to Mexico. Elevation: 5,500 - 10,000ft.

Culture

Prefers rocky, steep soils.

Value

Like many species in this family, Holodiscus grows out of rock cracks, but is only moderately drought tolerant. The flowers add an interesting texture but the creamy color is short lived turning to an rather ugly brown. Has orangish-red fall color. Uncommon in trade.

Propagation

Germinates well from fresh seed. Sow seed onto soil in container and cover to depth. For seed older than one year cold treat for 90 cover to depth. To sow outdoors in desired location sprinkle a plentiful amount of seed and cover with ¼" of soil. Fall sowing is recommended for this method.

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A thing is right when it tends to preserve the integrity, stability and beauty of the biotic community. It is wrong when it tends otherwise.

        Aldo Leopold