All of your stone fruits will drop their leaves starting in December. At this time of the year we recommend the first application to your trees with a dormant spray. Two more sprayings are recommended, the next one about January 1, and then again January 15.
When you apply dormant sprays, it kills the insects and diseases that are harboring in and around your trees. We recommend a product called Liqui-Cop. It is safe to use on all of your dormant trees, including Apricots, Apples, Almonds, Cherries, Peaches, Nectarines, Plums and Pears. When you spray, be sure to apply it so the entire tree is dripping wet. You can use this same spray on your roses as a dormant spray in winter months to help control powdery mildew and black spot.
Just so you know, your Citrus, Avocado and other tropical fruit trees should not be sprayed with dormant sprays.