Acer

Acer ginnala (Amur Maple)
Acer monspessulanum (Montpellier Maple)
Acer opalus subsp. obtusatum (Bosnian Maple)
Acer platanoides (Norway Maple)
Acer platanoides 'Crimson King' (Crimson King Norway Maple)
Acer platanoides 'Deborah' (Deborah Norway Maple)
Acer platanoides 'Schwedleri' (Schwedleri Norway Maple)

Adenocarpus

Adenocarpus decorticans (Silver Broom )

Aesculus

Aesculus chinensis (Chinese Horsechestnut)
Aesculus flava (Yellow Buckeye )
Aesculus glabra (Ohio Buckeye )
Aesculus glabra var. arguta (Texas Buckeye )
Aesculus sylvatica (Painted Buckeye )

Argyrocytisus

Argyrocytisus battandieri (Pineapple Broom )

Berberis

Berberis Emerald Carousel™ (Emerald Carousel Barberry)
Berberis fremontii (Fremont Barberry )
Berberis thunbergii (Japanese Barberry)
Berberis thunbergii 'Aurea' (Golden Japanese Barberry)
Berberis thunbergii Golden Nugget™ (Golden Nugget Barberry)
Berberis thunbergii 'Kobold' (Kobold Japanese Barberry)
Berberis thunbergii Sunsation™ (Sunsation Barberry)
Berberis thunbergii var. atropurpurea (Purple (Red) Leafed Japanese Barberry)
Berberis thunbergii var. atropurpurea 'Crimson Pigmy' (Crimson Pigmy Japanese Barberry)
Berberis thunbergii var. atropurpurea 'Golden Ring' (Golden Ring Barberry)
Berberis thunbergii var. atropurpurea 'Rose Glow' (Rose Glow Barberry)
Berberis thunbergii var. atropurpurea Royal Burgundy™ (Royal Burgundy Barberry)

Buddleia

Buddleia globosa (Orange Butterfly Bush )
Buddleia × weyeriana 'Honeycomb' (Honeycomb Butterfly Bush)

Campsis

Campsis radicans (Trumpet Vine )

Caragana

Caragana arborescens (Siberian Peashrub )
Caragana arborescens 'Lorbergii' (Lorberg Peashrub )
Caragana frutex 'Globosa' (Globe Russian Peashrub )
Caragana pygmaea (Pygmy Peashrub )

Chimonanthus

Chimonanthus praecox (Fragrant Wintersweet)

Clematis

Clematis tangutica (Golden Clematis)

Cornus

Cornus alternifolia (Pagoda Dogwood)
Cornus amomum (Silky Dogwood)
Cornus controversa 'June Snow' (June Snow Giant Dogwood)
Cornus mas (Corneliancherry Dogwood)
Cornus officinalis (Japanese Cornelian Dogwood )
Cornus racemosa (Gray Dogwood )

Corylopsis

Corylopsis (Winterhazel)
Corylopsis pauciflora (Buttercup Winterhazel)
Corylopsis spicata (Spike Winterhazel)

Cotinus

Cotinus coggygria (Common Smoketree )
Cotinus coggygria Golden Spirit™ (Golden Spirit Smoketree)
Cotinus obovatus (American Smoketree )

Cytisus

Cytisus scoparius (Scotch Broom )
Cytisus scoparius 'Moonlight' (Moonlight Scotch Broom)

Edgeworthia

Edgeworthia chrysantha (Paper Bush )

Encelia

Encelia farinosa (Brittlebush )

Enkianthus

Enkianthus campanulatus (Redvein Enkianthus)

Ephedra

Ephedra equisetina (Bluestem Joint Fir )
Ephedra fasciculata (Arizona Ephedra )
Ephedra viridis (Green Mormon Tea )

Firmiana

Firmiana simplex (Chinese Parasol Tree )

Forestiera

Forestiera pubescens (Desert Olive)

Forsythia

Forsythia × intermedia (Border Forsythia)
Forsythia viridissima (Greenstem Forsythia)
Forsythia viridissima 'Bronxensis' (Bronxensis Greenstem Forsythia)
Forsythia viridissima var. koreana 'Kumson' (Kumson Korean Greenstem Forsythia)

Genista

Genista lydia (Lydia Broom )
Genista pilosa (Silkyleaf Broom )

Gleditsia

Gleditsia macracantha (Large Spined Honeylocust)

Hamamelis

Hamamelis × intermedia (Witchhazel)
Hamamelis × intermedia 'Arnold Promise' (Arnold Promise Witchhazel)
Hamamelis × intermedia 'Primivera' (Primivera Witchhazel)
Hamamelis vernalis (Vernal Witchhazel )
Hamamelis virginiana (Common Witchhazel)

Hydrangea

Hydrangea paniculata (Panicle Hydrangea)

Hypericum

Hypericum 'Hidcote' (Hidcote Hypericum)
Hypericum androsaemum (Tutsan)

Idesia

Idesia polycarpa (Iigiri Tree )

Jasminum

Jasminum nudiflorum (Winter Jasmine)

Kalopanax

Kalopanax septemlobus (Castor-aralia )

Kerria

Kerria japonica (Japanese Kerria )
Kerria japonica 'Kin Kan' (Kin Kan Japanese Kerria)
Kerria japonica 'Picta' (Variegated Japanese Kerria, )
Kerria japonica 'Pleniflora' (Double Japanese Kerria)

Koelreuteria

Koelreuteria paniculata (Golden Raintree )
Koelreuteria paniculata 'Fastigiata' (Upright Golden Raintree)

Laburnum

Laburnum × watereri (Goldenchain Tree )

Liriodendron

Liriodendron chinense (Chinese Tuliptree)
Liriodendron tulipifera (Tuliptree )
Liriodendron tulipifera 'Aureo-marginatum' (Aureo-marginatum Tuliptree)
Liriodendron tulipifera 'Medio-pictum' (Medio-pictum Tuliptree )

Lonicera

Lonicera japonica (Japanese Honeysuckle)
Lonicera maackii (Amur Honeysuckle )

Maackia

Maackia amurensis (Amur Maackia)

Magnolia

Magnolia 'Butterflies' (Butterflies Magnolia)
Magnolia 'Elizabeth' (Elizabeth Magnolia)

Paeonia

Paeonia lutea subsp. ludlowii (Tibetan Peony )

Parkinsonia

Parkinsonia florida (Blue Palo Verde)
Parkinsonia microphyllum (Littleleaf Palo Verde )

Parrotiopsis

Parrotiopsis jacquemontiana (No English common name )

Potentilla

Potentilla fruticosa (Shrubby Cinquefoil)

Prunus

Prunus serrulata 'Ukon' (Ukon Flowering Cherry)

Punica

Punica granatum (Pomegranate)

Purshia

Purshia stansburiana (Cliffrose)

Rhododendron (defines evaluations)

Rhododendron Tri Lights™ (Tri-Lights Azalea)