Here is a link to another web site on the subject, in English this time, which is also very informative. It does not always mean you have to cut down your precious; and these days expensive trees. Starting Out   I have learned much since I started working in this garden. It is 1500 square meters laid to raised flower beds, fruit trees and vegetable plots. My first job was to clean up the fruit trees. Depending on the type of tree, the selection of when to prune can be a little daunting when you first start out. For example, the nisperos (known as a loquat in English or nispero in Spanish), has soft orange flesh and usually three to five almond-sized seeds. They flower in late January and the fruit is ripe for cropping in April, so pruning should take place after the fruit has been removed. However most fruit farms leave pruning until September; it is believed that the canopy protects the tree from the sun in the summer.

But of course sweet delicious  seedless Navel Oranges (a genetic mutation discovered in Brazil about 1820) blossom is late spring with ripe fruit in December to February. So a specific pruning period does not really exist as I was used to in the UK. There, I would wait until the tree sap stopped rising in the Autumn and then prune ready for the following year. The trees flower in early Spring, sometimes before all the fruit has been picked. They require the tree heart to be pruned clear to allow sunlight to enter and the tree to be pruned to remove any deadwood and the keep its shape. I also give them a light prune in the summer as they can put on a lot of wood This seedless orange variety is only propagated through cuttings. These oranges are sweet and have bright orange skin that are easy to peel.

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