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As with all other plants, growth occurs when there is sufficient moisture and the temperature is high enough above freezing. In the temperate regions of the northern hemisphere, this is usually sometime between spring and fall. Depending on the region and climate, yearly growth usually ends around mid to late summer when temperatures become too high and soil moisture becomes scarce (Higher temperatures increase the rate at which photosynthesis and other processes occur, which increases the tree's water requirements).

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14y ago

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