QUICK TIP: Deep root injection 8-10” below grade in a 2-3’ grid provides the best nutrient distribution for your tree.

Deep root injection of innoculant 8-10" below ground.

Bypass the grass root system and reach tree root system.

Why fertilize a tree?

If you fertilized your lawn, you may not have fertilized your trees. Tree care companies have specialized equipment that can deliver fertilizer right where the trees need it – the tree’s root zone, just below your lawn’s root zone. In forests, trees shade out grass and other plants so the tree’s roots don’t have to compete with roots of other plants. Trees are free to absorb all the nutrients they need. Your lawn is a harsher environment for trees. In your lawn, trees must compete with grass roots for valuable nutrients. When you drop fertilizer on top of your lawn, the grass receives most of the benefits.

A different type and method of fertilization is used to fertilize trees than what is used to fertilize lawns, since trees don’t grow the same as grass. For trees, slow release fertilizer is applied directly to the tree roots, just below the grass roots. This can be done with special liquid fertilizers injected into the soil (sometimes called “deep-root fertilization”). Trees also respond to fertilizer differently than your grass. Over-fertilization can create tree health problems, so the need for fertilization should be determined by measuring annual growth, checking visual symptoms and/or chemically analyzing the soil or tree leaves.