Mar 23

Fertilization for Optimal Tree Growth

Fertilization for Optimal Tree Growth

Landscape trees and shrubs need periodic fertilization in order to maintain optimal growing conditions. Although in the wild this is not necessary, our modern home construction approaches result in a loss of top soil or compacting of the earth, which can reduce drainage and aeration. By failing to fertilize your trees and shrubs you are not giving them all of the nutrition that they require to thrive.

We use a combination of complete slow-release fertilizer and organic amendments to provide the nutrients for proper growth and root development. Our method involves injecting liquid fertilizer into the soil directly at the roots. This ensures an even distribution throughout the root zone and increases air exchange in the soil.

We would be happy to work with you to establish a soil fertility regime that provides the maximum benefit for all of your trees and shrubs. Let us handle the worry, and you just enjoy sitting in the shade.


A balanced diet at the right time is essential for humans and proper fertilization at the proper time is important

for plants as well. Trees and shrubs need nutrients which are important to the metabolism of the tree and

necessary for the tree to complete its life cycle. There are at least twenty essential elements for plants. The

most important are nitrogen (N), phosphorous (P), and potassium (K). Nutritional deficiencies of these elements in trees and shrubs cause various symptoms:


Nitrogen: Deficiency of this element causes slow growth, diminished leaf size or number of leaflets, and resulting

in pale green leaves.


Phosphorous: This deficiency causes abnormal reddish purple pigment on the petioles or interveinal areas of

broadleaved species. These symptoms sometimes develop without noticeable change in foliar density or

leaf size on established plants.


Potassium: Deficiency of potassium causes slow growth, browning of tip margins and interval areas of the

leaves, and shoot dieback. It also increases sensitivity to freezing and allows susceptibility to various diseases.


Frequency of fertilizer application depends on several factors such as the type of soil, time of year, or type of

tree or shrub.Testing the soil pH level is important for effective fertilization applications. If the soil is too alkaline, iron

solubility is reduced and then becomes unavailable to the tree. Excess fertilization can be a problem as well. It can

injure trees and reduce tolerance to certain stress problems. Evergreen Tree Care uses a organic fertilizer which

is safe for humans, pets, and the environment.

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