Alnus

Alnus alnobetula subsp. sinuata (Sitka Alder )

Amelanchier

Amelanchier × grandiflora (Apple Serviceberry)

Arctostaphylos

Arctostaphylos andersonii (Santa Cruz Manzanita )
Arctostaphylos manzanita (Parry Manzanita )

Crataegus

Crataegus laevigata (English Hawthorn )
Crataegus laevigata Crimson Cloud™ (Crimson Cloud Hawthorn)

Cydonia

Cydonia oblonga (Quince)

Hibiscus

Hibiscus syriacus (Rose of Sharon )

Lagerstroemia

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

Magnolia

Magnolia liliiflora (Lily Magnolia)
Magnolia × loebneri (Loebner Magnolia)
Magnolia × loebneri 'Leonard Messel' (Leonard Messel Magnolia)
Magnolia × soulangeana (Saucer Magnolia)
Magnolia stellata (Star Magnolia)

Malus

Malus floribunda (Japanese Flowering Crabapple)
Malus fusca (Western Crabapple )
Malus hupehensis (Tea Crabapple)

Prunus

Prunus 'Accolade' (Accolade Flowering Cherry)
Prunus Cascade Snow™ (Cascade Snow Flowering Cherry)
Prunus 'Newport' (Newport Flowering Plum)
Prunus armeniaca (Apricot)
Prunus cerasifera 'Atropurpurea' (Atropurpurea Flowering Plum)
Prunus mume 'Trumpet' (Trumpet Japanese Flowering Apricot)
Prunus serrulata (Japanese Flowering Cherry )
Prunus serrulata 'Mt. Fuji' (Mt. Fuji Flowering Cherry)
Prunus serrulata 'Shiro-fugen' (Shiro-fugen Flowering Cherry)
Prunus serrulata 'Shogetsu' (Shogetsu Flowering Cherry)
Prunus serrulata 'Ukon' (Ukon Flowering Cherry)
Prunus subcordata (Klamath Plum )
Prunus subhirtella (Higan Cherry)
Prunus subhirtella 'Pendula' (Weeping Higan Cherry)
Prunus subhirtella var. autumnalis (Autumn Flowering Higan Cherry)
Prunus × yedoensis (Yoshino Cherry )
Prunus × yedoensis 'Akebono' (Akebono Yoshino Cherry)

Rhododendron (defines evaluations)

Rhododendron arboreum subsp. cinnamomeum (Cinnamon Rhododendron)
Rhododendron irroratum (Irroratum Rhododendron)
Rhododendron macrophyllum (Western Rhododendron)

Rhus

Rhus ovata (Sugar Bush)