Adansonia

Adansonia digitata (Baobab)

Adenium

Adenium obesum (Desert Rose )

Adenocarpus

Adenocarpus decorticans (Silver Broom )

Agave

Agave macroacantha (Black-spinned Agave)

Albizia

Albizia julibrissin (Silk Tree )
Albizia julibrissin 'Summer Chocolate' (Summer Chocolate Silk Tree)

Aleurites

Aleurites moluccanus (Candelnut)

Amorpha

Amorpha nana (Dwarf Wild Indigo )

Argyrocytisus

Argyrocytisus battandieri (Pineapple Broom )

Asimina

Asimina triloba (Common Pawpaw )

Bauhinia

Bauhinia variegata (Orchid Tree )

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 )

Catalpa

Catalpa bignonioides (Southern Catalpa )
Catalpa × erubescens 'Purpurea' (Purple Catalpa)
Catalpa speciosa (Northern Catalpa )

Ceiba

Ceiba speciosa (Floss Silk Tree)

Ceratonia

Ceratonia siliqua (Carob )

Cercis

Cercis canadensis (Eastern Redbud)
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 )

Chimonanthus

Chimonanthus praecox (Fragrant Wintersweet)

Cladrastis

Cladrastis kentukea (American Yellowwood)

Cytisus

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

Delonix

Delonix regia (Royal Poinciana)

Firmiana

Firmiana simplex (Chinese Parasol Tree )

Fremontodendron

Fremontodendron (Flannel Bush )

Gleditsia

Gleditsia macracantha (Large Spined Honeylocust)
Gleditsia triacanthos (Honeylocust)
Gleditsia triacanthos var. inermis (Thornless Honeylocust)

Grevillea

Grevillea robusta (Silky Oak )

Gymnocladus

Gymnocladus dioica (Kentucky Coffeetree)

Hakea

Hakea microcarpa (Small-fruited Hakea)

Hamamelis

Hamamelis × intermedia (Witchhazel)

Hibiscus

Hibiscus syriacus (Rose of Sharon )

Holodiscus

Holodiscus discolor (Oceanspray )

Laburnum

Laburnum × watereri (Goldenchain Tree )

Lagerstroemia

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

Lapageria

Lapageria rosea (Chilean Bellflower )

Liriodendron

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

Maackia

Maackia amurensis (Amur Maackia)
Maackia chinensis (Chinese Maackia)

Magnolia

Magnolia denudata (Yulan Magnolia)
Magnolia ernestii (Yellow Lily Tree)
Magnolia lotungensis (Eastern Joy Lotus Tree)
Magnolia salicifolia (Willowleaf Magnolia )

Nerium

Nerium oleander (Oleander)

Olneya

Olneya tesota (Ironwood)

Oxydendrum

Oxydendrum arboreum (Sourwood )

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 )
Robinia pseudoacacia (Black Locust)
Robinia pseudoacacia 'Frisia' (Frisia Black Locust)

Santolina

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

Spathodea

Spathodea campanulata (African Tulip Tree)

Styphnolobium

Styphnolobium japonicum (Japanese Pagodatree )
Styphnolobium japonicum Millstone™ (Millstone Japanese Pagodatree)
Styphnolobium japonicum 'Pendula' (Weeping Scholar-tree )

Toona

Toona sinensis (Chinese Toon )

Ulex

Ulex europaeus (Common Gorse )

Yucca

Yucca filamentosa (Adam's Needle Yucca)
Yucca glauca ( Small Soapweed )

Ziziphus

Ziziphus jujuba (Jujube )