HollyFrontier Refining &
Marketing's Horticultural Oils
Over Seventy Years of Producing Effective,
Low Toxicity Oils
HollyFrontier’s Horticultural Oils offer a combination of pesticidal effectiveness and low toxicity. Tightly refined to meet the most stringent manufacturing and use requirements, these oils provide an alternative or supplement to many synthetic organic pesticides in Integrated Pest Management Systems. Sunspray Oils kill pests primarily through the physical action of “smothering” the insects and their eggs. In comparison, most synthetic organic pesticides kill pests by poisoning. HollyFrontier manufactures two lines of spray oils which meet or exceed these specifications: HollyFrontier Sunspray Horticultural Spray Oils, registered as pesticides with the U.S. Environmental Protection Agency (EPA) under the Federal Insecticide, Fungicide and Rodenticide Act (FIFRA); and HollyFrontier Ag Oils, carriers for chemical herbicides.