sentences:  Choose planting sites with good, moist, well-drained soils; avoid shallow or excessively drained soils.During periods of prolonged drought or on dry sites regular watering is important during the growing season, as well as, the application of fertilizers every few years.Well-established trees and avoidance of any disturbance to the root system that may result in root injury or poor root growth both reduce likelihood of individual trees becoming diseased.