Acer

Acer opalus subsp. obtusatum (Bosnian Maple)

Adenocarpus

Adenocarpus decorticans (Silver Broom )

Aesculus

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)

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)

Cornus

Cornus alternifolia (Pagoda Dogwood)
Cornus amomum (Silky 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 fasciculata (Arizona Ephedra )
Ephedra viridis (Green Mormon Tea )

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 )

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)

Jasminum

Jasminum nudiflorum (Winter Jasmine)

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)

Lonicera

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

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)

Punica

Punica granatum (Pomegranate)

Purshia

Purshia stansburiana (Cliffrose)

Rhododendron (defines evaluations)

Rhododendron Tri Lights™ (Tri-Lights Azalea)
Rhododendron 'Frilly Lemon' (Frilly Lemon Azalea)
Rhododendron luteum (Pontic or Pontica Azalea)

Rhus

Rhus aromatica (Fragrant Sumac)
Rhus aromatica 'Gro-Low' (Gro-Low Fragrant Sumac)
Rhus typhina (Staghorn Sumac)
Rhus typhina 'Laciniata' (Laceleaf Staghorn Sumac)

Ribes

Ribes × gordonianum (Gordon's Currant)
Ribes odoratum (Golden Currant )

Salix

Salix caprea 'Kilmarnock' (Kilmarnock Willow)

Stachyurus

Stachyurus praecox (Early Spiketail)

Stewartia

Stewartia serrata (Sawtooth Stewartia)

Symphoricarpos

Symphoricarpos orbiculatus (Indiancurrant Coralberry )

Syringa

Syringa pekinensis (Peking Lilac )

Viburnum

Viburnum cassinoides (Witherod Viburnum )
Viburnum nudum (Possumhaw )
Viburnum nudum 'Winterthur' (Winterthur Smooth Witherod)
Viburnum prunifolium (Blackhaw Viburnum)