Answer: This Chinese Bearberry (Cotoneaster dammeri)can grow 6" to 2' tall, depending upon growing conditions, but generally grows to a foot or so tall, with the possibility of its semi-prostrate branches stretching six feet wide. Wherever its low-growing branches touch the ground, it roots itself, continuing to colonize rough ground if permitted. It has evergreen or semi-evergreen leaves which turn purple-green in winter. This is the shortest growing rockspray cotoneaster. If you're looking for a flatter growing groundcover, you might consider Arctostaphylos uva-ursa 'Wood's Red' which produces a crop of red berries similar to those of cotoneaster.
Best wishes with your landscape!
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