Deep Root Fertilization
Deep root fertilization is the preferred and most effective method for fertilizing trees and shrubs. Through this process, a liquid, time-release fertilizer is pressure-injected in a grid pattern into the root zone of the tree or shrub. Well-nourished trees and shrubs have better resistance to disease, insect attack, and drought.
Deep root fertilizing can help keep your trees and shrubs healthy and promote luxurious foliage that adds beauty and value to your property. Liquid fertilizer is injected directly into the root zone area for maximum benefits. Its slow-release action won't burn delicate feeding roots. Deep root fertilization can also help with problems of soil compaction. Liquid fertilizer injected into the root zone under pressure helps aerate the soil. It opens up air pockets, helping to provide much-needed oxygen to the root system. At Urban Forest Pro, we use a fertilizer with a 6-month time release.
This method of fertilization is especially useful for trees and shrubs growing in lawns or having other vegetation such as ivy or other ground cover around them. The fertilizer is injected below the roots of the surface vegetation to provide maximum benefit to the slightly deeper roots of the trees and shrubs. Surface fertilization, such as typical lawn fertilization, usually does not provide a significant benefit to trees and shrubs. When fertilizer is applied to the surface, the thick, fibrous roots of lawns and ground covers utilize and hold the nutrients and do not allow them to infiltrate to the deeper sub-surface soil layer where the roots of the trees and shrubs reside. Micronutrients, such as iron and manganese, systemic insecticides, and Mycorrhizae can also be added to fertilizer to help treat other common tree and shrub problems.
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