Questing for the Perfect Landscape Tree
William Flemer III
The title assigned for this talk is a somewhat ambiguous one. What are landscape trees, shade trees, or yard trees? The requirements for trees to be planted on municipal streets are more exacting than those for trees used in parks or industrial and home landscape plantings. Street trees must be able to be pruned up and free of branches for at least 12 ft or higher so that they will not interfere with pedestrian or vehicular traffic. Those useful for more open landscape locations do not need to develop such high clear trunks and in some locations can have their branches descend to ground level, being in effect very large shrubs. To succeed on city streets, especially congested inner city streets, trees must be very tolerant of air pollution, reflected glare from street, sidewalk, and building surfaces.
They must also be very drought tolerant because, except for special irrigation arrangements, they must rely on natural precipitation falling on minimal tree lawns or small planting
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