Tree Nutrition and Fertilization

Fertilization is one of the most important aspects of tree care.  Trees require certain nutrients to function and grow. Urban landscape trees are often growing in soils that do not contain sufficient available nutrients for satisfactory growth and development.


At Alive Tree Care we recommend a tree nutrition program consisting of Deep Root Fertilization.  The nutrient blend that we use in Deep Root Fertilization is specifically designed for trees and shrubs.  Deep Root Fertilization is a unique process in which nutrients are introduced directly into the root zone.  We start with a grid pattern beginning at the tree’s drip edge with injection sites into the soil every 2 ½ to 3 feet and continuing in rows 2 ½ to 3 feet apart until the entire root system is covered.  This coverage cannot be matched by any other fertilization program.  This program is superior to all others.


There are many benefits to Deep Root Fertilization.  Some of those benefits include; making sure the proper nutrients are available to the tree, encouragement of root growth (which aids in the uptake of water and nutrients), aeration of the soil, and reduction of soil compaction.  All of these benefits create larger pore spaces, which allows for greater water and air holding capacity.  Trees that are Deep Root Fertilized are healthier and more attractive.  Healthy trees are more resistant to disease and insect infestation.


Many lawn fertilizers contain weed and feed formulations that may be harmful to your trees.  When you apply a broadleaf herbicide to your turf, remember, tree roots coexist with turf roots.  The same herbicide that kills broadleaf weeds in your lawn is picked up by tree roots and can harm or kill your trees if applied incorrectly.


The following is a list of some of the nutrients that we use in Deep Root Fertilization.




            Nitrogen – Promotes green leaves and stems


            Phosphorus – Used in the production of roots, flowers, and fruit


            Potassium – Aids in flowering and fruiting, sturdiness, disease and stress resistance


            Calcium – Aids in the manufacturing of cells


            Magnesium – A prime element in the development of seeds and chlorophyll


            Sulfur – A primary element of proteins and contributes to the green color


The micronutrients (Iron, Manganese, Zinc, Molybdenum, Boron, Chlorine, Copper, and Carbon) are needed in lesser amounts.  However, a deficiency in any of these can also affect the health of the tree.


Sign up for our Email Newsletter