Acer

Aesculus

Agave

Atriplex

Azara

Berberis

Brachyglottis

Buddleia

Carpinus

Celastrus

Celtis

Cercocarpus

Corylopsis

Elaeagnus

Enkianthus

Euonymus

Forestiera

Forsythia

Frangula

Grevillea

Hamamelis

Hydrangea

Kerria

Mahonia

Paeonia

Parrotiopsis

Quillaja

Rhododendron (defines evaluations)

Rhus

Ribes

Salix

Stachyurus

Stewartia

Viburnum

Yucca

Zanthoxylum