Deep Root Fertilization

In contrast to forest floors, trees in urban environments have limited root space, soil compaction, water and nutrient competition with turf, and deficiencies in organic matter due to removal of leaf litter. Urban settings also lack the diverse populations of microorganisms and other nutrients that forest floors produce.

We recommend an annual tree and shrub deep root fertilization with our slowly soluble, long residual, complete fertilizer with a low salt index.  Spring/Fall Our specialized formulation is designed to help woody plants mitigate adverse environmental stresses, such as drought, salinity, and soil ph extremes.

We also add a product called Rhizo FueI, which adds beneficial mycorrhizal fungi and bacteria that aid in fibrous root development and water and nutrient uptake through the formulation of increased root surface area. The beneficial fungi also release enzymes into the soil that dissolve hard to capture nutrients, such as phosphorous, iron and other “tightly bound soil nutrients.

Deep root fertilization is a process where nutrient solution is injected into the root zone of trees. The solution is injected into the root zone under pressure which helps aerate the root system. The solution is injected just below the surface and goes to a depth of 12 – 14 inches. Soil injection sites are placed about 2 or 3 feet apart in a grid pattern throughout the canopy area and beyond the drip line. (See the diagram below.)


Our fertilization programs are performed in accordance with ANSI A300 Part 2 standards for tree fertilization