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Quercus suber Cultivation | Propagation | General Uses General Uses: A mulch of the leaves repels slugs, grubs etc, though fresh leaves should not be used as these can inhibit plant growth. Oak galls are excrescences that are sometimes produced in great numbers on the tree and are caused by the activity of the larvae of different insects. The insects live inside these galls, obtaining their nutrient therein. When the insect pupates and leaves, the gall can be used as a rich source of tannin, that can also be used as a dyestuff[4]. A fairly wind-tolerant tree, it can be used in shelterbelt plantings[200]. Bark is the source of cork, it is much used for heat and sound insulation, flooring, floats etc. Trees are first harvested when they are 25 - 30 years old[74], and then harvested every 6 - 12 years[117]. The bark must be removed carefully so as not to harm the tree. A large tree can yield up to 1 tonne of cork. On a 10% moisture basis, the bark contains 16.9% tannin[223]. Wood. For further Quercus suber gardening information |
