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Wood Trees Temperate: Lateral growth in trees frequently begins later than growth in height, but the period of lateral growth is longer. Rates of lateral growth likewise are low at the outset, increasing after a few weeks and then diminishing. In view of the long annual period of lateral growth in trees, deleterious environmental conditions may exercise a pronounced effect on growth. In the wood trees temperate of trees of temperate regions, narrow and wide growth rings may be observed, marking years characterized by unfavorable and favorable conditions for growth.
Melons and grapes are susceptible to damage by frost so their open air cultivation is restricted mainly to warm-temperate and subtropical climates.
Temperate fruit trees are nearly all deciduous. Most can resist temperatures of below — 7°C (20°F) during winter dormancy and many cannot grow in tropical or subtropical climates because prolonged exposure to low temperatures in the winter is necessary for normal development.
Many other industrial products can be made from chemically converted wood trees temperate, and numerous future uses doubtless will be found for wood trees temperate wastes and low-grade trees. Solving some technological problems may convert wood trees temperate into constituents of other fibers, crude molasses for livestock, yeast for human food, and various alcohols. More than a fifth of wood trees temperate substance is lignin, a binder of complex chemical structure not understood and mostly wasted, though the source of vanillin flavoring.
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