These new plants will help keep the area cooler. In areas surrounded by concrete or asphalt group the trees together or plant an understory to buffer high temperatures. Soil compaction, altered surface water drainage patterns, and mechanical damage to this tree's roots are three stress factors represented at this freeway construction site Low temperature can also injure trees. While plants can often tolerate extreme cold during the dormant season, they could be injured by the same temperature during the growing season. Select plants with the extreme rather than the average temperature in mind.
Moisture stress is one of the most common problems.
Too much or too little water both inhibit root function, and therefore, the growth of the entire plant. Physical damage from snow and ice, poor water quality, and erosion could also be classified as moisture stress. One of the most important factors contributing to moisture deficiency is the amount of space available for the roots. If roots are restricted, they cannot spread through enough soil to gather the moisture needed to support the crown. Another type of moisture stress occurs mostly in broadleaved and needled evergreens.