Check with your extention agent but I understand you are not to use it during the time when the sun is hot and would cause so damage to the plants also. I took this off a website for dormat oil. Dormant/All Season Spray Oil Stops Insects Before They Start Information about non-poisonous control you wonÂt find even in many gardening encyclopedias.

In the spring, before your trees or ornamentals leaf out, spray them with a mixture of "Superior" (or "Summer") oil and water. This highly refined, light, almost odorless oil, is made specifically for insect control. The oil-water mixture does not damage the environment. There is no poison. The oil simply seals over wintering eggs of pests so they donÂt hatch. It also kills hatched insects coated with the mixture. Based on our tests we recommend the superior oil proven for 50 years. Use this oil as instructed on the can.

1 quart makes about 25 gallons
Paul