Motor Oil Info

One of the most effective methods for fertilizing older or larger woody plants such as trees and shrubs is Deep Root Feeding below the root zone of a lawn. The ideal fertilizer for deep root feeding is a liquid, low salt product, such as AGGRAND 4-3-3 Natural Fertilizer with Fish-Kelp, containing chelated marco and micronutrients that releases slowly into the root zone.

Several application methods are used for deep root feeding. All of these methods involve penetrating the root zone around the drip line of the tree or shrub (the feeder roots form a circle 2 feet to 4 feet wide around the drip line). One method is to pierce, dig or drill a number of holes in the ground 6 inches to 12 inches deep to receive the fertilizer solution. Another method is to rototill around the drip line, 2 inches to 3 inches, just deep enough to break up the sod but not deep enough to disturb many of the surface roots of the tree or shrub. Then use a soaker hose or a hose-end sprayer to apply the fertilizer. This method may not be possible on shallow-rooted trees such as maples.