Abelia

Alnus

Amelanchier

Arctostaphylos

Aronia

Callicarpa

Camellia

Chaenomeles

Cistus

Clethra

Crataegus

Deutzia

Enkianthus

Escallonia

Gaultheria

Hibiscus

Hydrangea

Leucothoe

Malus

Menziesia

Pachysandra

Physocarpus

Pieris

Prunus

Rhaphiolepis

Rhododendron (defines evaluations)

Ribes

Spiraea

Vaccinium

Viburnum

Weigela