WSU Clark County Extension
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Rock Cotoneaster

Scientific name: Cotoneaster horizontalis
Taxonomy
Family:Rosaceae
Type:Groundcovers deciduous woody
Native:NO
Plant Requirements
Zone:5 to 8
Sun:Full sun
Plant Characteristics
Height:2 ft
Width:8 ft
Bloom:Spring flowers
Bloom Time:April to May
Bloom Color:White
Additional Characteristics
Trees


Fruit

Leaves


Bark
Wildlife value

Poisonous
Description Rock cotoneaster is best known as a prostrate groundcover with a notable fishbone branching pattern and layered branches.

  Morphology:
Rock Cotoneaster is classified as a deciduous groundcover that grows to a height of 2’ with a spread of 8’. Leaves are elliptic in shape ranging from 1/4”-1/2” in width.

Flowering begins in April. The 5-petal flowers are white or pink. As the flowers fade ¼”wide red berries form in the fall. Fall foliage is a deep red to orange color.

  Adaptation:
The plant tolerates sun and wind. If complete soil coverage is desired space new plants 5’ apart.

  Pests:
None reported.
For assistance, contact Dr. Charles Brun (brunc@wsu.edu), (360) 397-6060 5701
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