, Cotinus Coggygria and Weigela florida (Bunge)A.DC.were medium, but they could also be used if with fine management or domestication .Those of Buddleja davidii Franch.,Spiraea salicifolia L.

• 女贞、美国红栌和锦带抗寒性中等，但通过精细管理或品种驯化也可用于屋顶及阳台绿化；