A Technical Report from The Bartlett Tree Research Laboratories
The amount of water in the soil, in large part, determines how well trees and shrubs will establish and grow. Lack of water is one of the leading causes of failure of new plantings. Mature trees with root damage from construction injury, root rot or other factors also may die during drought periods due to their inability to take up adequate amounts of water. At the other end of the water spectrum, trees and shrubs that receive excess amounts of water experience root loss due to lack of air in the water-saturated soil. When water levels are high, ‘water mold’ type root pathogens can infect and eventually kill.