Todd from Sacramento, California writes
When using horticultural oils, we would suggest using only one at a time to avoid damaging your plants. Triple Action has Neem Oil (a horticultural oil derived from the neem tree) plus pyrethrin, a contact insecticide, so it is a combination product with two modes of action. The product label for Triple Action also indicates not to use the product when temperatures are less than 45 degrees. A Dormant Oil is usually applied at a higher concentration during winter months. Be sure to follow the product labels and local recommendations for timing when using horticultural oils. This fact sheet from University of Nevada Copperative Extension has great information about horticultural oils.
Answer last updated on: 01/20/2017
