6. Serviceberry (Amelanchier x grandiflora and A. laevis) cultivars feature lacy white flowers in spring, blue-black fruit in summer and brilliant fall foliage.
Size: Heights range from five to eight metres.
7. Siberian crab apple (Malus baccata ‘Columnaris’) is a narrow, upright flowering crab apple with tiny yellow or red fruits in autumn.
Size: Eight metres tall by only two metres wide.
8. Variegated Japanese angelica tree (Aralia elata ‘Aureovariegata’) has cream-edged foliage and summer clusters of creamy white flowers followed by purple berries.
Size: About four metres high by three and a half metres wide.
9. White cedar (Thuja occidentalis) cultivars can grow as tall as 20 metres, but rarely do they spread beyond two metres. Compact, pyramidal forms include the very narrow ‘Degroot’s Spire’, ‘Emerald’ and ‘Holmstrup’.
Size: Up to 20 metres tall, but no wider than two metres
Zone 2 to 4, depending on the species
10. Witch hazel (Hamamelis x intermedia) and its cultivars produce long-lasting yellow or red flowers in early spring and richly coloured fall foliage.
Size: About six metres tall by three metres wide.
Lorraine Flanigan is a freelance writer and editor with a passion for gardening. You can read her personal gardening journal at City Gardening.