Trees are such enormous and imposing things that we tend to take their needs for granted. We stress and fuss over annual bed linen plants, and get all hot and bothered if a small dry area appears on the lawn. Flowers and yards however are ephemeral elements in the garden, while the tree is a long term matter. Undoubtedly, it is the one part of the garden that we truly bestow to future generations. It is of the utmost importance therefore not only to care and support it as one would a kid, however also to recognize that many processes that possibly threaten its life, happen unheard and hidden, rather like cancer creeping up on a person.
Turfs and flowers are quite efficient in informing us how they feel. An absence of moisture fast tree stump grinding in the soil is nearly instantly interacted to us by the wilting of the plant. A tree on the other hand can appear strong and healthy, with none of the tell-tale signs of tension, such as drooping leaves. Yet appearances can be really misleading. In fact it can be mentioned in general terms that when stress signs initially appear, the internal damage that has already occurred is so extreme, that the tree is well on its way to a sudden death.
The minimum water requirement for trees is believed to have to do with 300 mm a year. That is one of the most dry spell durable species worldwide, like Pistachio and Tamarisk, require access to some 300 liters of water for each square meter of ground that they cover. So locations with less annual rainfall can not support trees of any type, besides in localized areas such as valley bottoms, where water may gather.
The majority of garden trees need a lot more than that. A lemon tree growing in a Mediterranean environment for example needs some 800 mm of water a year. The staying 400 has to be provided by irrigation if the yearly rains averages say 400 mm.
In dry environments for that reason it's vital to understand the yearly water needs of the trees in your garden. Once again, it must be pointed out that the propensity of the majority of people is to water those plants that appear to be most in need. Really, in drought years the exact reverse should be the case. When water is in short supply, the flowers and lawn should be delegated dry, while the trees are offered what they require. Lawn and flowers can be changed; a fully grown tree, 150 years of ages, never!
Rot and decay typically establish in the branches and trunks of trees following bad pruning operations. Just like water stress, the indications can take years to reveal themselves. The inaccurate pruning of a significant limb could cause that limb to collapse 15 years later on or more, as the unseen, unheard development of the rot eats its method into the heart of the wood. Trees that look completely healthy, total with pruning injuries completely calloused over, can unexpectedly collapse. On evaluation, the trunk or branch is found to be hollow within, the outcome of rot and decay working gradually over the years.