Updated: May 2, 2020
Trees should be fertilized in October, or in April as soon as the frost leaves the ground. By fertilizing in the fall, some
nutrients will have a chance to be absorbed by the roots and will already be in the ground when the roots resume functioning in the spring. The fertilizer should be made up of macronutrients (Nitrogen, Phosphorus, and Potassium) and micronutrients (such as Iron, Magnesium and Manganese). The roots are below the ground and continue growing and absorbing nutrients long after the leaves fall, often into December, and begin work again in the spring before the leaves return. The tree must absorb nutrients and water to enable the leaves to resume growth. Don’s Trees Service along with its certified arborist will make sure your trees are properly evaluated and feed the proper nutrients.
There are two types of feeding. Drench Feeding and Injection.
Drench: Soil drenching is the process of adding diluted nutrients and control products directly to the base of a plant. It provides deep, targeted treatment and is a useful way for professionals to apply insecticides to trees with pest infestations. It also can be a way to apply fertilizers to plants with specific nutrient needs. During a soil drench, the product is poured directly over a plant’s roots near the stem or trunk. This method allows the professional to prevent the chemical from getting in contact other plants.
Injection: also known as trunk or stem injection, is a method of target the precise application of pesticides, plant resistance activators, and fertilizers into the xylem (vascular tissue) of a tree with the purpose of protecting the tree from pests or nutrition for correction of nutrient deficiencies.