Berberis

Berberis darwinii (Darwin Barberry)
Berberis triacanthophora (Threespine Barberry )

Camellia

Camellia japonica (Japanese Camellia)
Camellia sasanqua (Sasanqua Camellia)

Ceiba

Ceiba speciosa (Floss Silk Tree)

Chaenomeles

Chaenomeles speciosa (Flowering Quince)

Clethra

Clethra alnifolia 'Ruby Spice' (Ruby Spice Summersweet )

Corylus

Corylus avellana 'Red Dragon' (Red Dragon Hazelnut)
Corylus avellana 'Rote Zeller' (Rote Zeller Hazelnut)

Crataegus

Crataegus laevigata Crimson Cloud™ (Crimson Cloud Hawthorn)
Crataegus laevigata 'Pauls Scarlet' (Paul's Scarlet Hawthorn)

Enkianthus

Enkianthus campanulatus (Redvein Enkianthus)

Escallonia

Escallonia 'Compakta' (Compakta Escallonia)
Escallonia laevis 'Gold Brian' (Gold Brian Escallonia)
Escallonia × langleyensis (Langley Escallonia)
Escallonia × langleyensis 'Pride of Donard' (Pride of Donard Escallonia)

Fagus

Fagus grandifolia (American Beech)

Grevillea

Grevillea aquifolium (Holly Grevillea)
Grevillea lanigera (Woolly Grevillea)

Hamamelis

Hamamelis × intermedia (Witchhazel)
Hamamelis × intermedia 'Arnold Promise' (Arnold Promise Witchhazel)
Hamamelis × intermedia 'Diane' (Diane Witchhazel)
Hamamelis × intermedia 'Jelena' (Jelena Witchhazel)
Hamamelis vernalis (Vernal Witchhazel )

Hibiscus

Hibiscus syriacus (Rose of Sharon )

Juglans

Juglans cinerea (Butternut)

Lavatera

Lavatera thuringiaca (Tree Lavatera)

Loropetalum

Loropetalum chinense var. rubrum (Pink-flowering Fringe-flower )
Loropetalum chinense var. rubrum 'Daybreak's Flame' (Daybreak's Flame Fringe-flower)
Loropetalum chinense var. rubrum Plum Delight™ (Plum Delight Fringe-flower)

Malus

Malus Brandywine® (Brandywine Crabapple)
Malus 'Indian Summer' (Indian Summer Crabapple)
Malus 'Prairifire' (Prairifire Crabapple)
Malus atrosanguinea (Carmine Crabapple)

Morella

Morella rubra (Red Bayberry )

Parrotia

Parrotia persica (Persian Parrotia )

Pieris

Pieris japonica (Japanese Pieris )
Pieris japonica 'Valley Valentine' (Valley Valentine Pieris)

Platanus

Platanus acerifolia (London Planetree )
Platanus occidentalis (American Sycamore or Planetree )
Platanus racemosa (California Sycamore )

Populus

Populus deltoides (Eastern Cottonwood)
Populus fremontii (Fremont Cottonwood )
Populus grandidentata (Bigtooth Aspen)
Populus nigra (Black Poplar)
Populus nigra 'Italica' (Lombardy Poplar )
Populus tremula 'Erecta' (Upright European Aspen )

Prunus

Prunus 'First Lady' (First Lady Flowering Cherry)
Prunus 'Okame' (Okame Flowering Cherry)
Prunus × cistena (Purpleleaf Sandcherry )
Prunus prostrata (Rock Cherry )

Rhododendron (defines evaluations)

Rhododendron formosum var. formosum (Formosum Rhododendron)

Ribes

Ribes × gordonianum (Gordon's Currant)
Ribes malvaceum (Chaparral Currant)

Rosa

Rosa acicularis (Wild Prickly Rose)
Rosa rugosa (Rugosa Rose)

Spiraea

Spiraea japonica 'Anthony Waterer' (Anthony Waterer Spirea )
Spiraea japonica 'Bumalda' (Bumald Spirea)
Spiraea japonica Double Play® Painted Lady® (Painted Lady® Spirea)
Spiraea japonica 'Goldflame' (Goldflame Spirea)
Spiraea japonica var. alpina (Daphne Spirea)

Ulmus

Ulmus americana (American Elm)
Ulmus davidiana var. japonica Emerald Sunshine® (Emerald Sunshine Elm)
Ulmus davidiana var. japonica (Japanese Elm)
Ulmus glabra 'Camperdownii' (Camperdown Scotch Elm)
Ulmus × hollandica (Dutch Elm )