Why Fertilize Trees?
Forest trees usually thrive without the addition of fertilizer, which can give the erroneous impression that trees in general do not require it. However, while forest soils are rich in humus (organic matter) that is replenished by the decay of plant residues, urban soils are usually very low in humus and nutrients. Because leaves in home landscapes are removed (raked away), nature’s recycling program for nutrients is interrupted. Because ornamental trees and shrubs are also subjected to harsh and unfavorable soil and environmental conditions, the need for fertilizer is even greater. The addition of fertilizer not only improves the appearance and condition of trees and shrubs, but it helps them to better withstand minor insect and disease problems, drought, and other stresses. Fertilization is not a cure-all, but after years of research we have found that well-nourished trees do not have as many serious and costly problems as unfertilized trees. One of the most important services for yo
