Horticultural Oil Insect Spray is a concentrated oil that is mixed with water and then sprayed onto the leaves and bark of your tree to control a variety of insects. Among the insects it controls are: mites (such as spider mites), scale insects (such as magnolia scale and oystershell scale), galls, mealy bugs, codling moth, red spiders, whiteflies, aphids, leaf rollers, treehoppers and other insects.

During the Growing Season:
When sprayed during the growing season, Horticultural Oil Insect Spray kills insects by blocking their pores and smothering them. Mix at a ratio of 1:100 (one bottle makes 50 liters or 13 gallons of growing season spray).

During the Dormant Season:
When sprayed during the dormant season when trees and insects are inactive, Horticultural Oil Insect Spray remains an effective way to control dormant insects and eggs. Mix at a ratio 1:50 (one bottle makes 25 liters or 6.5 gallons of dormant season spray).

Our Horticultural Oil Insect Spray is a highly refined mineral oil much lighter than the old dormant-grade oils. It is also less viscous and evaporates more rapidly from leaves and stems of plants.

These features make Horticultural Oil Insect Spray much less phytotoxic (toxic to plants) and therefore more suitable for use during the growing season. It rapidly mixes in water and can be used in non-freezing weather as a dormant spray or at the recommended lower dosages as a summer spray on a wide variety of trees and shrubs.

The Horticultural Oil Insect Spray is recommended for use on fruit trees, shade trees, shrubs, ornamentals and roses. It is not recommend for use on Beech, Butternut, Colorado Blue Spruce, Douglas Fir, Hickory, Holly, Sugar Maple, Japanese maple, Walnut or ferns.