Deep root fertilization is a process of incorporating nutrients and other beneficial components directly into the root zone of trees, shrubs and flowers. By applying these materials in the rootzone the applicator can use less material, decrease run-off and loss of nutrients, and know that the root system will have access to these nutrients more efficiently. These applications can contain traditional nutrients, soil conditioners (humic and fulvic acids), plant hormones (Gravity SL PGS), beneficial fungi (mycorrhizae), and bio-stimulants (amino acids). All of these materials will come in direct contact with the root system of the tree or shrubs being treated. This method of fertilization is more beneficial than surface feeding as it takes the nutrients to the roots without needing to wait for irrigation or precipitation to move the fertilizer into the root zone. Deep root applications are also superior to granular top-dress applications due to the materials not needing to be broken down and solubilized be uptake can occur. Deep root feeding can also aerate any compacted soil to allow for air and water to move more freely thus improving the overall soil structure.
Speak with a tree care expert to determine if DRF is the best treatment for your planting areas. In some cases, surface fertilization or drenching might be the best method if you are dealing with dense planting areas or small perennial or annual flowers that do not have large root systems to take in the nutritional products. If this is the case modifying your tank mix to include some foliar absorbed products would be the preferred technique. Listed below are three specific programs. The first is for new transplants to help improve the establishment and survival of new plants. The second is for existing plant material and is designed to maintain optimum vigor and overall color. The third program is an organic based program for use where traditional fertilizers are not desired. It should be noted that when making deep root fertilization applications this is an ideal time to add to the mixture a systemic insecticide. This addition will preventatively protect your plant material from potential insect out breaks for the next season. Consult your ornamental specialist on which product to add to you program to best fit the insect issues in your geography.