The Dormant oil needs to be applied when...Dormant....you guessed it, or there can be an adverse effect on the plant itself. Most plants breathe thru either the bark or the leaves. Deciduous plants are typically dormant when leaves are not present and most evergreens stay dormant until the ground becomes warmer and unfrozen . Some evergreens like Blue Spruce are finiky and can lose color when treated and should be avoided when treating the Landscape. Bark breathers like Maple also can have adverse affects from the oils if treated too late.
Overall a non-pesticide approach like a Dormant oil is a way to get a fresh start in your Landscape this spring . The fertilizer that we use is a slow release balanced blend that is injected under the soil. This process is an active feeding that seeks out tiny root hairs and is absorbed into the plant for enhanced color and vigor. Most plant varieties need supplemental nutrients due to the lack of organic matter and forest droppings present in an urban landscape setting.
