Adenium

Adenium obesum (Desert Rose )

Adenocarpus

Adenocarpus decorticans (Silver Broom )

Agave

Agave macroacantha (Black-spinned Agave)
Agave shawii (Shaw's Agave)

Amorpha

Amorpha nana (Dwarf Wild Indigo )

Argyrocytisus

Argyrocytisus battandieri (Pineapple Broom )

Asimina

Asimina triloba (Common Pawpaw )

Aucuba

Aucuba japonica (Japanese Aucuba )

Bauhinia

Bauhinia variegata (Orchid Tree )

Berberis

Berberis × gladwynensis 'William Penn' (William Penn Barberry)
Berberis replicata (Evergreen Barberry)
Berberis verruculosa (Warty Barberry)

Calycanthus

Calycanthus floridus (Carolina Allspice )
Calycanthus × raulstonii 'Hartlage Wine' (Hartlage Wine Sweetbush )

Caragana

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

Ceratonia

Ceratonia siliqua (Carob )

Cercis

Cercis canadensis 'Forest Pansy' (Forest Pansy Redbud)
Cercis canadensis 'Ruby Falls' (Ruby Falls Weeping Redbud)
Cercis canadensis var. alba (White Flowered Redbud)
Cercis canadensis var. mexicana (Mexican Redbud)
Cercis canadensis var. texensis 'Oklahoma' (Oklahoma Redbud)
Cercis chinensis (Chinese Redbud)
Cercis chinensis 'Avondale' (Avondale Chinese Redbud)
Cercis occidentalis (Western Redbud )
Cercis siliquastrum (Judus Tree )

Chilopsis

Chilopsis linearis (Desert Willow )

Chimonanthus

Chimonanthus praecox (Fragrant Wintersweet)

Cornus

Cornus florida (Flowering Dogwood )
Cornus florida 'Welchii' (Tricolor Dogwood )
Cornus mas (Corneliancherry Dogwood)
Cornus officinalis (Japanese Cornelian Dogwood )

Cotinus

Cotinus obovatus (American Smoketree )

Cytisus

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

Daphne

Daphne laureola (Spurge Laurel)

Dermatophyllum

Dermatophyllum secundiflorum (Mescal Bean )
Dermatophyllum secundiflorum 'Silver Peso' (Silver Peso Mescal Bean )

Fremontodendron

Fremontodendron (Flannel Bush )

Fuchsia

Fuchsia magellanica (Magellan Fuchsia )

Genista

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

Hakea

Hakea microcarpa (Small-fruited Hakea)

Hamamelis

Hamamelis × intermedia (Witchhazel)

Hibiscus

Hibiscus syriacus (Rose of Sharon )

Itea

Itea virginica (Sweetspire )
Itea virginica 'Henrys Garnet' (Henry's Garnet Sweetspire)

Lagerstroemia

Lagerstroemia chekiangensis (Crape Myrtle)
Lagerstroemia floribunda (Asian Crape Myrtle )

Maackia

Maackia chinensis (Chinese Maackia)

Magnolia

Magnolia 'Caerhays Belle' (Caerhays Belle Magnolia)
Magnolia kobus (Kobus Magnolia)
Magnolia liliiflora (Lily Magnolia)
Magnolia salicifolia (Willowleaf Magnolia )
Magnolia sieboldii (Siebold Magnolia )
Magnolia × soulangeana (Saucer Magnolia)
Magnolia stellata (Star Magnolia)
Magnolia stellata 'Rosea' (Rosea Star Magnolia )
Magnolia stellata 'Waterlily' (Waterlily Magnolia)
Magnolia tripetala (Umbrella Magnolia )
Magnolia virginiana (Sweetbay Magnolia)

Melaleuca

Melaleuca diosmifolia (Dotted Melaleuca )
Melaleuca nesophila (Pink Melaleuca )

Morus

Morus alba 'Unryu' (Contorted Mulberry )

Nerium

Nerium oleander (Oleander)

Olneya

Olneya tesota (Ironwood)

Parkinsonia

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

Parrotia

Parrotia persica (Persian Parrotia )

Pterostyrax

Pterostyrax hispida (Epaulette Tree )

Rhododendron (defines evaluations)

Rhododendron groenlandicum (Labrador-tea)

Robinia

Robinia neomexicana (New Mexican Locust )

Rosa

Rosa acicularis (Wild Prickly Rose)

Santolina

Santolina chamaecyparissus (Lavender Cotton)
Santolina virens (Green Lavender Cotton )

Yucca

Yucca brevifolia (Joshua Tree)
Yucca filamentosa (Adam's Needle Yucca)
Yucca filamentosa 'Golden Sword' (Golden Sword Yucca)
Yucca glauca ( Small Soapweed )
Yucca recurvifolia (Pendulous Yucca )