This cultivar typically grows to a height of 4 to 6 meters (13 to 20 feet) and spreads about the same distance, forming a broad, rounded canopy. The leaves are glossy, dark green, and elliptical in shape, measuring around 5 to 8 centimeters (2 to 3 inches) long.

The striking foliage, abundant flowers, and long-lasting berries make Cotoneaster ‘Cornubia’ a versatile and visually appealing choice for hedges, borders, or as a standalone specimen in garden designs. Its ability to attract wildlife adds to its overall appeal.