Used responsibly and maintained properly it makes an invaluable fast-growing screening plant. It has a preference for moist, but well-drained soils in open, sunny or shaded positions away from drying winds. It also makes a very good value-for-money topiary subject and we usually have a few designs available in stock. All forms have spray-like foliage. The foliage of 'Castlewellan' is golden tinted when young, maturing to bronze-green.