The exact timing for each activity can be obtained from the local extension service, land grant university or qualified tree care professional. Each of these activities can be done by the owner of the tree or by qualified tree care professionals. Tree Fertilization Trees, like all other living plants, have many nutritional requirements for sustained growth and reproduction. There are various methods of determining the available nutrients in the soil, as well as methods of determining the amount of nutrients absorbed by the tree. When certain nutrients are deficient in the soil, fertilizers may be able to correct the deficiency.
Fertilizers come in many forms and are applied in many ways.
The amount and kind of vegetation in the area, as well as the reasons for fertilization are critical factors in determining the application method to use. Each tree and shrub has a monetary value that represents its worth to the tree owner or its replacement cost. Tree appraisals are able to be done by arborists that are trained in the principles and practices as outlined by the Council of Tree and Landscape Appraisers. The Eighth Edition of The Guide for Plant Appraisal details these principles and practices. These appraisals are used for insurance claims, casualty loss claims, trespass cases and many other uses.