TREES FREE FROM INSECT PESTS AND DISEASES (Seldom attacked, and not seriously qffected) DECIDUOUS Ailanthus glandulosaTree of HeavenCercidiphyllum japonicurnKatsura-TreeElaeagnus angustifoliaRussian OliveGinkgo bilobaGinkgoGleditsia triacanthosHoney LocustGymnocladus dioicaKentucky CoffeetreeHalesia carolinaSilverbell TreeKoelreuteria paniculataGoldenrain TreeLiquidambar styracifluaSweetgurnMagnolia (all species)MagnoliaNyssa sylvaticaSourgurnOxydendrum arboreurnSourwoodPhellodendron (all species)Cork TreeSophora japonicaChinese Scholar-Tree EVERGREEN Pseudotsuga taxifoliaDouglas FirSciadopitys verticillataUmbrella PineTsuga (all species)Hemlock