Corylus avellana ‘Red Majestic’ – A new option in contorted Hazelnut or Harry Lauder’s Walking Stick with leaves that emerge burgundy-red and mature to green – which makes this deciduous shrub entirely burgundy in spring and somewhat two-toned in summer. These are best grown as solitary or container specimens and produce purple catkins from late winter into spring. The bare branches make good floral cuts. Grows 7-10′ tall. Hardy to zone 4.
Berberis thunbergii ‘Rose Glow’ – A very popular cultivar of Japanese Barberry with small rounded leaves that emerge reddish-purple and are suffused with pink veining shortly afterwards. This thorny deciduous shrub makes a good informal hedge and is also quite deer resistant. The best foliar colour is obtained by pruning (4-5′ tall) to maintain density. Zone 4.
Photinia x fraseri (P. glabra x P. serrulata) – This broadleaf evergreen shrub is commonly used as a hedging specimen. The glossy simple leaves (3″ long) emerge a burgundy-bronze to bright red, and showy white flowers appear in May-June if not pruned too heavily. Photinia can also be trained as an espalier form or small standard tree. Grows 8-12′ tall and is hardy to zone 7.
Cotinus coggygria ‘Royal Purple’ – A deciduous landscape standard with rounded leaves that emerge wine-red and mature to a deep reddish-purple. Smoke-like purplish pink panicles appear in late spring and continue into early summer. ‘Royal Purple’ retains its colour quite well if given adequate sun. Grows 12-15′ tall, so some pruning is usually required. Hardy to zone 5.
Physocarpus opulifolius ‘Diabolo’ (syn. ‘Monlo’) – A versatile deciduous shrub with reddish-purple trifoliate leaves and rounded clusters of white flowers in early summer, followed by small red seeds. ‘Diabolo’ makes an excellent hedge or solitary specimen, as it is easily pruned to shape. It is drought resistant once established and can be maintained to 4-5′ tall with pruning. Hardy to zone 3.