Woody Plants Database [http://woodyplants.cals.cornell.edu]
Species: Cotoneaster horizontalis
(koe-toe-nee-as'terr hor-i-zon-tah'lis)
Rockspray; Rock Cotoneaster
Cultivar Information
* See specific cultivar notes on next page.
Ornamental Characteristics
Size: Shrub < 4 feet, Groundcover Height: 2' - 3' (5' spread) Leaves: Deciduous Shape: ground cover, mounded horizontal branching is characteristically flat/herringbone/fanlike Ornamental Other: withstands drought once established; tolerant of wind; full sun or light shade
Environmental Characteristics
Light: Full sun, Part shade Hardy To Zone: 5b Soil Ph: Can tolerate acid to alkaline soil (pH 5.0 to 8.0) Environmental Other: withstands drought once established; tolerant of wind; full sun or light shade.Semi- evergreen or evergreen in the south.
Insect Disease
susceptible to a variety of diseases (mites, hawthorn lacebug, fireblight and more); only fireblight is a serious risk
Bare Root Transplanting
Any
Other
native to western China; transplant from container or B & B
1 Woody Plants Database [http://woodyplants.cals.cornell.edu]
Moisture Tolerance
Occasionally saturated Consistently moist, Occasional periods of Prolonged periods of or very wet soil well-drained soil dry soil dry soil
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2 Woody Plants Database [http://woodyplants.cals.cornell.edu] Cultivars for Cotoneaster horizontalis
Showing 1-5 of 5 items.
Cultivar Name Notes
Hessei 'Hessei' - irregular, decurving branching
Tom Thumb 'Tom Thumb' - dense, broad-spreading mound
Variegatus 'Variegatus' - dainty, variegated leaves
Perpusillus 'Perpusillus' - one of the most prostrate selections; this plant only grows to 1' tall x 7' wide; susceptible to fireblight
Robusta 'Robusta' - vigorous more upright growing habit; to 3' tall; heavy fruit bearer
3 Woody Plants Database [http://woodyplants.cals.cornell.edu] Photos
Cotoneaster horizontalis - Fruit, Leaves
Cotoneaster horizontalis - Habit
4 Woody Plants Database [http://woodyplants.cals.cornell.edu]
Cotoneaster horizontalis - Leaves, Fruit
Cotoneaster horizontalis - Fruit
5 Woody Plants Database [http://woodyplants.cals.cornell.edu]
Cotoneaster horizontalis - Habit
Cotoneaster horizontalis - Habit
6 Woody Plants Database [http://woodyplants.cals.cornell.edu]
Cotoneaster horizontalis - Habit, Fruit
Cotoneaster horizontalis - Bark
7 Woody Plants Database [http://woodyplants.cals.cornell.edu]
Cotoneaster horizontalis - Leaves, Flowers
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