You want to plant a tree. In a private garden, an urban boulevard or a grove. Is the tree you want to plant there, as beautiful as it may be, the right one? Is it suitable for the intended use? Is it suitable for the region of the country or for that specific location? Here are several important points about what to consider when choosing the right tree
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This article is not a precise guide for choosing the right trees. Such a guide would be a book or a much longer article … Our objective is to highlight the important points, with a few examples, and to demonstrate which factors should be considered when choosing a tree, what to find out and what to be careful about so that the tree will grow properly where it was planted and will continue to meet its horticultural objective over the years, even once matured.
It’s important to realize that dividing into regions is too broad an approach. There are differences from place to place within the same region. As a rule, the farther north one goes within a region, the lower the temperature and the higher the watering needs; the types of soil also change. There are trees that definitely will not suit a certain region of the country. But there are others whose limitations and durability need to be checked in relation to the conditions of the specific place where they are to be planted to make a decision.
The basic condition for choosing a tree needs to be suitability for the region. This suitability is actually weighing the conditions in the intended region for planting against the tree’s sensitivities or levels of resistance. The main conditions to be considered to make the right decision:
The coastal plain:
The sea is a moderating climatic factor. As a result, extreme temperatures are rare here, and there are few cases of extreme heatwaves or frosts. The differences between day and night are also minimal. Humidity is relatively high all year. The soil is well-drained, which makes it suitable for most trees. When planting trees on the coastal line, the sea spray coming with the winds off the water result in very few trees being suitably resistant to be frontline coastal plants. Some trees that are in fact suitable: Tamarix aphylla, Tamarix aphylla erect and Tamarix chinensis, Ficus carica, Ficus sycomorus, Ficus lyrata and Ficus religiosa, Lagunaria patersonii, Erythrina indica, Plumeria rubra and Prosopis. There are other trees that are would be suitable for an unexposed position in the front or second coastal line: Kigelia pinnata, Cassia fistula, Morus, Albizia lebbeck, Celtis bungeana and Cupaniopsis anacardioides.
Lowlands:
There are usually not problems with soil type. The dispersion of temperatures is greater than in the coastal plain. In relatively rare cases (once every 5 to 10 years) there may be winters with more than 5 nights of frost. The region is characterized by lots of precipitation in winter and generally comfortable temperatures. In summer the temperatures are pleasant to hot, both day and night.
Mountain areas:
The winters are cold: some nights the temperatures reach 0°C or less. There is much wind, which also contributes to the drop in temperature. In the high mountains, it sometimes snows.
The Jordan Valley, the Aravah, the Judaean Mountains and the Negev:
a desert climate. It is hot and dry. Temperatures are very high in summer. The winters are also relatively warm, and precipitation is very minimal. In large parts of these regions the soil is saline and chalky. This means high acidity and minerals that damage some trees.
It’s important to realize that dividing into regions like this is too broad an approach. There are differences from place to place within the same region. As a rule, the farther north one goes within a region, the lower the temperature and the higher the watering needs; the types of soil also change.
There are trees that will definitely not suit a certain region of the country. But there are others whose limitations and durability need to be checked in relation to the conditions of the specific place where they are to be planted to make a decision.
There are types of trees with good resistance to weather conditions that would be suitable for any climatic region. These include Eucalyptus torquata and Eucalyptus camaldulensis, the different species of Cupressus, some species of Brachychiton, × Chitalpa tashkentensis, Celtis bungeana and Celtis australis (other species of Celtis are not suitable for a desert climate), Ficus carica (the only fig that is suitable for the cold of the mountain region), the different species of Morus and Punica species.
Some examples of trees that are suitable for a hot and dry climate are those of the genera Erythrina and Tamarix, Millettia pinnata, Tipuana tipu, Albizia lebbeck, Delonix regia, Kigelia africana, Callistemon, Bolusanthus, Ficus microcarpa, sycomorus and macrophylla and Eucalypti.
Deciduous trees are more suitable for colder climates: Pyrus calleryana, the different species of genera Celtis, Ulmus, Acer, Rhus, Fraxinus, Quercus, Platanus and Cercis, Albizia julibrissin, Triadica sebifera and more.
There are various pests that can damage ornamental trees. Without listing all the species, there are aphids, moths, acarids, caterpillars and worms, beetles and snails. The common diseases are powdery mildew and tree rust. An iron or nitrogen deficiency, even if not a disease, is among the conditions that may damage the tree or delay/suppress its development.
There are treatments for all of these. But it is advisable to know what the selected tree’s resistance to all these is and to take that information into account. This is primarily to have you finger on the pulse so you can administer the necessary treatment when required.
Some examples of trees that are suitable for a hot and dry climate are those of the genera Erythrina and Tamarix, Millettia pinnata, Tipuana tipu, Albizia lebbeck, Delonix regia, Kigelia africana, Callistemon, Bolusanthus, Ficus microcarpa, sycomorus and macrophylla and Eucalypti. Deciduous trees are more suitable for colder climates: Pyrus calleryana, the different species of genera Celtis, Ulmus, Acer, Rhus, Fraxinus, Quercus, Platanus and Cercis, Albizia julibrissin, Triadica sebifera and more.
It is advisable knowing the tree’s growth rate and considering whether it suits the objectives in planting it. Also think about what is supposed to be in its vicinity. Is the tree intended to be planted on its own or as part of a boulevard or grove? Is grass supposed to grow beneath it? Because there are trees around which grass does not grow well.
In planning a grove, there is the matter of the size of the canopy, according to which the trees must be selected and the planting distance between them determined. For boulevards of trees near roads, for instance, the trees will usually have a columnar canopy or simply have a small canopy diameter so as not to “invade” the road.
Another matter of horticultural use is the root system. Don’t make the mistake of planting trees with invasive roots, such as species of Ficus, Albizia or Erythrina, near buildings, sidewalks or pipes.
If you are looking for a tree intended to provide shade, it is always better to select one with a spreading canopy or a tree with a broad canopy, in accordance with the size limitations. Other factors that should be considered: Is it important that the tree be evergreen, or would a deciduous tree be more suitable? And other points like flowers and flowering seasons, the beauty of the flowers versus their attracting insects, the fruits that appear after flowering etc.
Trees do a good job in our world: in terms of aesthetics, of ecology and the environmental, of functionality … If you choose the right tree for your specific needs, the enjoyment you derive from it will be perfection itself.
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בעת שלכת הסתיו, צבעי השלכת – בעיקר האדום – מאפשרים לעלה להישאר מעט יותר על העץ וכך העץ “שואב” את שארית החומרים המזינים מהעלים ולנצלם עד תום. צבעי שלכת ביערות שלא בעונת הסתיו מאפשרת ליערנים לאתר בעיות.
המלצות ואפשרויות לשילוב שקדים בתפריט היומי:
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הפרט המוכר הכי עתיק בעולם הוא עץ מזן Pinus longaeva המוכר בשמותיו העממיים Great Basin bristlecone pine או intermountain bristlecone pine או western bristlecone pine, שנמצא ביער Ancient Bristlecone Pine שב’הרים הלבנים’ בקליפורניה.
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Sequoia sempervirens
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