USDA Zone 2: Trees and Shrubs

Shrubs

Alder, speckled (Alnus rugosa)
American cranberry bush (Viburnum trilobum)
Buffalo-berry (Shepherdia canadensis)
Cinquefoil, bush (Potentilla fruticosa)
Cranberry, highbush (Viburnum edule)
Currant (Ribes)
Gooseberry (Ribus)
Lilac, common (Syringa vulgaris)
Lilac, Meyer's (Syringa meyerii)
Peashrub, Siberian (Caragana arborescens)
Redosier dogwood, redtwig dogwood (Cornus sericea)
Rose, redleaf (Rosa glauca or Rosa rubrifolia)
Rose, rugosa (Rosa rugosa)
Spirea (Spiraea sp.)
Sweet fern (Comptonia peregrina)
Tamarisk (Tamarix ramosissima)
Viburnum, American cranberrrybush viburnum (Viburnum trilobum)
Viburnum, arrowwood (Viburnum dentatum), in protected sites
Willow, dwarf blue-leaf Arctic (Salix purpurea)

Trees
Birch, paper (Betula papyrifera)
Larch, Eastern, American larch (Larix laricina)