Adansonia

Adansonia digitata (Baobab)

Aleurites

Aleurites moluccanus (Candelnut)
Aleurites rockinghamensis (Candelnut)

Alnus

Alnus alnobetula subsp. sinuata (Sitka Alder )

Andromeda

Andromeda polifolia (Bog Rosemary)

Arctostaphylos

Arctostaphylos andersonii (Santa Cruz Manzanita )
Arctostaphylos bakeri subsp. bakeri 'Louis Edmunds' (Louis Edmunds Manzanita)
Arctostaphylos canescens (Hoary Manzanita )
Arctostaphylos columbiana (Hairy Manzanita)
Arctostaphylos confertiflora (Santa Rosa Island Manzanita)
Arctostaphylos edmundsii (Little Sur Manzanita)
Arctostaphylos insularis (Island Manzanita)
Arctostaphylos manzanita (Parry Manzanita )
Arctostaphylos manzanita 'St. Helena' (St. Helena Manzanita)
Arctostaphylos nevadensis (Pinemat Manzanita)
Arctostaphylos pajaroensis (Pajaro Manzanita)
Arctostaphylos pajaroensis 'Bretts Beauty' (Brett's Beauty Manzanita)
Arctostaphylos patula (Green Manzanita )
Arctostaphylos pumila (Sandmat Manzanita )
Arctostaphylos pungens (Ponitleaf Manzanita )
Arctostaphylos rudis (Shag Bark Manzanita )
Arctostaphylos tomentosa (Wolly Manzanita )

Baccharis

Baccharis pilularis (Coyote Bush )

Bauhinia

Bauhinia variegata (Orchid Tree )

Camellia

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

Castanea

Castanea dentata (American Chestnut)
Castanea mollissima (Chinese Chestnut)
Castanea sativa (European Chestnut )

Ceanothus

Ceanothus integerrimus (Deer Brush)
Ceanothus sanguineus (Redstem Ceanothus )
Ceanothus velutinus (Snowbrush )

Chamaebatiaria

Chamaebatiaria millefolium (Fernbush )

Chrysolepis

Chrysolepis chrysophylla (Golden Chinkapin )

Cladrastis

Cladrastis kentukea (American Yellowwood)

Clethra

Clethra alnifolia (Summersweet )
Clethra alnifolia 'Ruby Spice' (Ruby Spice Summersweet )

Crataegus

Crataegus germanica (Medlar)

Dasiphora

Dasiphora fruticosa (Shrubby Cinquefoil )

Davidia

Davidia involucrata (Dove Tree )

Enkianthus

Enkianthus campanulatus (Redvein Enkianthus)

Eriogonum

Eriogonum fasciculatum (California Buckwheat )

Eucalyptus

Eucalyptus urnigera (Urn Gum)

Exochorda

Exochorda racemosa (Common Pearlbush)

Franklinia

Franklinia alatamaha (Franklin Tree )

Gleditsia

Gleditsia macracantha (Large Spined Honeylocust)

Hakea

Hakea microcarpa (Small-fruited Hakea)

Halesia

Halesia carolina (Carolina Silverbell )

Hibiscus

Hibiscus syriacus (Rose of Sharon )

Holodiscus

Holodiscus discolor (Oceanspray )
Holodiscus microphyllus (Small-leaved Creambush)

Hovenia

Hovenia dulcis (Japanese Raisintree )

Kerria

Kerria japonica 'Albiflora' (White Japanese Kerria, )

Lagerstroemia

Lagerstroemia (hybrid) (Hybrid Crape Myrtle)
Lagerstroemia indica (Common Crape Myrtle )

Leucothoe

Leucothoe axillaris (Coast Leucothoen )
Leucothoe davisiae (Western Leucothoe )
Leucothoe fontanesiana (Drooping Leucothoe)
Leucothoe fontanesiana 'Girard's Rainbow' (Girard's Rainbow Leucothoe)
Leucothoe grayana (Hana-hirinoki (Japan))
Leucothoe racemosa (Sweetbells Leucothoe )

Loropetalum

Loropetalum chinense (Chinese Fringe-flower)

Maackia

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

Magnolia

Magnolia denudata (Yulan Magnolia)
Magnolia lotungensis (Eastern Joy Lotus Tree)
Magnolia macrophylla (Bigleaf Magnolia)
Magnolia salicifolia (Willowleaf Magnolia )

Menziesia

Menziesia ciliicalyx var. multiflora (Mock Azalea )
Menziesia ferruginea (Rusty Menziesia )

Neviusia

Neviusia cliftonii (Shasta Snowwreath)

Notholithocarpus

Notholithocarpus densiflorus (Tanoak )
Notholithocarpus densiflorus var. echinoides (Shrub Tanoak )

Olneya

Olneya tesota (Ironwood)

Oxydendrum

Oxydendrum arboreum (Sourwood )

Pachysandra

Pachysandra procumbens (Allegheny Pachysandra)

Parkinsonia

Parkinsonia microphyllum (Littleleaf Palo Verde )

Parrotiopsis

Parrotiopsis jacquemontiana (No English common name )

Physocarpus

Physocarpus capitatus (Western Ninebark )
Physocarpus malvaceus (Mallow Ninebark )

Pieris

Pieris formosa var. forrestii (Chinese Pieris )
Pieris japonica (Japanese Pieris )
Pieris japonica var. yakushimanum 'Prelude ' (Prelude Pieris )
Pieris japonica 'Variegata' (Variegated Peiris)
Pieris japonica 'Flaming Silver' (Flaming Silver Pieris)

Pittosporum

Pittosporum heterophyllum (Chinese Pittosporum)
Pittosporum tobira (Japanese Mock Orange )

Pterostyrax

Pterostyrax hispida (Epaulette Tree )

Purshia

Purshia stansburiana (Cliffrose)
Purshia tridentata (Bitterbrush )

Pyrus

Pyrus calleryana (Callery Pear)
Pyrus calleryana Chanticleer® (Chanticleer Pear)
Pyrus fauriei Korean Sun™ (Korean Sun Pear)
Pyrus salicifolia 'Pendula' (Weeping Willow-leaved Pear)

Quillaja

Quillaja saponaria (Soap-bark Tree )

Rhododendron (defines evaluations)

Rhododendron groenlandicum (Labrador-tea)

Robinia

Robinia neomexicana (New Mexican Locust )
Robinia pseudoacacia (Black Locust)
Robinia pseudoacacia 'Frisia' (Frisia Black Locust)

Salix

Salix magnifica (Magnolia-leaf Willow )