Trees are the living beings of a longer life than any garden can host; once settled in their home, it is then extremely difficult to transport them. It is important, before planting them, to predict that they will not reach too large in relation to those of the garden, since using pruning is never a good system, as it can cause serious damage to the plant and, moreover, only fixes the problem of a too wide crown; not to mention that the remarkable development of the radical apparatus often gave serious problems. These problems can be overcome with the use of trees of modest size, now imported in many species especially from China and Japan, or obtained with artificial intersections; among these not very developed plants there are also many fruit species, such as apple and cherry trees. The ideal tree for the garden should have a beautiful color in autumn, a dense foliage able to project pleasant shade of summer, a beautiful color of the bark and of the new leaflets that are born in spring; it is then even more valuable if, in this season, it produces beautiful flowers followed by a good production of fruit. Of course, it is difficult to find all these qualities in one tree, but there are some that have many. In the gardens, there are also many fastigated or weeping trees, which are always very ornamental.
Several trees prove to be largely tolerant of different types of soil but often require the soil to have good water drainage. Another limiting factor may be the amount of calcium present, since a certain number of trees, such as chestnut, are remarkably calcifugous: it is better therefore to avoid the soil in which this substance is present, especially if they are superficial. Apart from the calcium content which determines the degree of alkalinity of the soil and therefore its pH, the depth and the structure of the soil also influence the types of trees that can be grown there. Many conifers prefer acid or neutral soils, while among the Rosaceae there are some species such as the apple tree, the peach tree, the cherry tree, the pear tree, the hawthorn that love alkaline soils. In the description of the individual species, detailed explanations will be given on the needs of the land, on the decorative aspects and on any other useful feature of the trees that can be successfully used in our gardens.
Trees in the garden
Hardwood: Acer Aesculus Ailanthus Alnus Amelanchier Arbutus Betula Buxus Carpinus Carya Castanea Catalpa Celtis Cercis
Corylus Cytisus Eucalyptus Fagus Ficus Fraxinus Ginkgo Biloba Gleditschla Ilex Juglans Liquidambar Liriodendron Magnolia Malus Ostrya
Platanus Cedrus Populus Cephalotaxus Prunus Chamaecyparis Quercus Cryptomeria Robinia Cupressus Salix Juniperus Sambucus Larix Sorbus Libocedrus Tilia Picea Tyrus Pinus Ulmus Pseudotsuga Sequoia Conifers: Taxodium Taxus Abies Thuj to Araucaria Thujopsis
Trees in the garden
For Trees a woody plant, usually with a single and undivided stem up to a certain height above the ground, and a total of not less than 4-5 m in total. According to the foliage there are two types of A .: deciduous, when the foliar cycle, from the opening of the buds to the fall of the leaves, takes place within a year; evergreens, when this cycle takes some years and the plant always has a certain number of living leaves. The A. are then divided into conifers and broad-leaved, based on important anatomical and morphological characteristics. The conifers have needle-like or linear leaves. The feminine flower or inflorescence consists of a strobile, made up of strong scales that enclose the seed and which sometimes come together and become fleshy. The wood structure is characteristic; it is in fact called homoxyl because it is made up of tracheids alone that perform transport and support functions, lacking the tracheae. The annual growth rings are well marked and, in general, the resiniferous channels in which the resin is secreted are present. The broad-leaved trees have leaves that have the flap, more or less expanded, crossed by a dense web of veins and which often are deciduous; they are more evolved plants, which include a greater number of species and have a more complex structure.
“The tree, man’s friend, the symbol of every organic creation; the image tree of a total construction. A fascinating spectacle, which is an impeccable order, presents itself to our eyes with the most fantastic arabesques; the Mathematically measured game of multiplying branches w each spring, with a new open hand. Leaves with ribs so well defined. Coverage, above us between earth and sky, generous screen near our eyes and the possible geometries of our hard constructions, precious tool in the hands of industry. The most synthetic expression of the forces of nature. Presence of nature in the city; around our labors or our amusements tree, man’s millennial companion.”
Real also: Trees fastigiate