Many insect pests survive the winter by hiding in bark crevices or plant tissue.
Horticultural oil treatments target these overwintering pests before they emerge in large numbers during spring.
At Keyman Lawn, Tree & Pest, we use professional horticultural oil applications to control pests safely and effectively.
Unlike many insecticides, horticultural oil works through physical action.
The oil coats the insect’s body and blocks the spiracles through which they breathe, effectively suffocating them.
Because of this mode of action, pests cannot develop resistance to the treatment.
Horticultural oil is effective against many common pests, including:
It is especially useful for controlling overwintering insect stages before populations expand.
Applications are typically made during cooler periods of the growing season when plants are less likely to experience stress.
Early spring treatments are particularly effective for reducing pest populations before they become problematic.
Multiple applications may be recommended for heavy infestations.
