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 1 2 3 4 5 6 7 8 9 10 11 12 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 8.