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A very tall treewith a thick trunk, the leaves dont don't hang low, kills . Very old oak trees yield more wood than most trees. Oak trees are slow growing. Oak trees will also kill trees around itdue to it's thick foliage blocking the sunlight. If your planting an Oak, you need to leave 2 tiles of grass between it and other trees.  Oak wood is most useful for creating durable, high-quality wooden toolslike mallets.