TREES FREE FROM INSECT PESTS AND DISEASES (Seldom attacked, and not seriously qffected) DECIDUOUS       Ailanthus glandulosa Tree of Heaven Cercidiphyllum japonicurn Katsura-Tree Elaeagnus angustifolia Russian Olive Ginkgo biloba Ginkgo Gleditsia triacanthos Honey Locust Gymnocladus dioica Kentucky Coffeetree Halesia carolina Silverbell Tree Koelreuteria paniculata Goldenrain Tree Liquidambar styraciflua Sweetgurn Magnolia (all species) Magnolia Nyssa sylvatica Sourgurn Oxydendrum arboreurn […]

Trees with blue (glaucous) and silver foliage Broad-leaved ALNUS INCANA Leaves grey underneath. CRATAEGUS ORIENTALIS Leaves grey on both sides, deeply cut. EUCALYPTUS The tree has numerous species, but their hardiness over a long period is doubtful; E. gunnii is the best known. POPULUS ALBA The white poplar has white twigs and undersides of the leaves, the best form for […]

Trees with white, silver or yellow variegated leaves These are all sports, perhaps occurring originally on one branch only, of normal trees that have been propagated vege-turns a rich yellow. GYMNOCLADUS DIOICUS The large leaves turn clear yellow. LIQUIDAMBAR STYRACIFLUA Variable, but in good specimens can be brilliant, purple to scarlet. LIRIODENDRON TULIPIFERA Leaves turn a good yellow. MALUS Apples […]

Trees with early flowers ACER OPALUS The Italian maple has yellow flowers in early April. CORNUS MAS This has many small yellow flowers in February. PARROTIA PERSICA This bears very numerous small scarlet tassel-like flowers in February. PRUNUS ‘Accolade’ is a semi-double pink cherry flowering in March; P. conradinae is a cherry with scented white or pinkish flowers in late […]

    Fast growing TREES – RAPID GROWTH   DECIDUOUS EVERGREEN Picea excelsa Norway Spruce Pinus resinosa Red Pine Pinus rigida Pitch Pine Pinus strobus White Pine Pinus sylvestris Scots Pine  

Permanently wet soils The other soil factor that must be taken into consideration is continuous moisture, that is, soils that are continuously saturated. The majority of trees will not grow in these conditions, but those that will include the numerous kinds of willow (Salix), large and small, as well as the alders (Alnus), which are mostly trees of moderate size. […]