Alert: Limited Online Availability

Now that summer is here, we have limited our stock for online purchase. Find Monrovia plants at your local garden center. Pre-order for 2023 will be available later this year. ×

Prostrate Rock Cotoneaster

Cotoneaster horizontalis 'Perpusillus'

Tough, easy and adaptable - great for rock gardens and banks! Cool autumn temperatures bring a brilliant flush of fall color to the finely textured, glossy green foliage and highly ornamental red berries. An excellent spreading groundcover with thick intertwining, arching branches. Semi-evergreen in colder areas.
There are very few rules in gardening, but perhaps the most important one is to work within your zone. Choosing plants that grow and thrive in your particular climate is the very first step toward having a beautiful garden . Learn More

Your climate might be too cold for this plant:


Full sun, Partial sun

Water regularly - weekly, or more often in extreme heat.


Due to the seasonal nature of plants, availability at your local garden center is not guaranteed. Give them a call before visiting.

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Botanical Pronunciationko-to-ne-AS-ter hor-i-zon-TA-lis per-pu-SIL-lus
Average Size at MaturityQuickly reaches 1 to 2 ft. tall, spreading 5 to 7 ft. wide.
Bloom TimeSpring
Design IdeasThis Cotoneaster gives a beautiful herringbone effect against a white wall or fence. Don't try to prune into a shape or it will lose its striking silhouette. Also excellent in rockeries where sprays of branches will arch out over the slope.
Deciduous/ EvergreenEvergreen
Flower ColorWhite
Foliage ColorGreen
Garden StyleAsian/Zen, Contemporary, Rustic
Growth Habit22
Growth RateFast
Landscape UseBorder, Erosion Control, Firescaping/Firewise, Mass Planting, Rock Garden, Hillside, Coastal Exposure, Wildlife Garden, Urban Garden, Ground Cover
Light NeedsFull sun, Partial sun
Soil NeedsTree & Shrub Food
Special FeatureExtreme Cold Hardiness, Fall Color, Ornamental Berries, Tolerates Poor Soils, Waterwise, Year-round Interest, Fast Growing, Bird Friendly
Water NeedsModerate
Watering NeedsWater regularly - weekly, or more often in extreme heat.
Companion PlantsDogwood (Cornus); Cranberry Bush (Viburnum); Juniper (Juniperus); Magnolia (Magnolia); Rose (Rosa)

Thrives in average to poor, well-drained soils. Space 4 to 5 ft. apart as groundcover; mulch to control weeds until plants fill in. Water deeply, regularly during first growing season to establish extensive root system. Once established, reduce frequency; tolerates drought in cooler climates. Fertilize in early spring. Prune as needed to shape.

This Plant's Growing Zones: 4-7

USDA Cold Hardiness Zone Map

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant