I want to know what kind of spray to use on my peach tree if I see insects on it. When is the correct time to spray a tree? Are insect sprays harmful to the peaches?
Peach Tree Insects and What Kind of Spray
Certified GKH Gardening Expert
Dormant sprays should actually be started in winter. Use dormant sprays before green tissue shows in spring buds. Use on days when the air temperature is above freezing. Use a Superior Oil spray for the first dormant spray application in mid- to late winter. Three weeks later make a second application of Superior Oil or Liquid Lime Sulfur.
When spraying trees to control peach borer pests, choose those with lindane endosufan or chlorpyrifos. Sprays should be mixed according to label instructions. They should also be applied so that it runs down the trunk and soaks into the ground around the base. Try not to spray on foliage or any fruit that may still be on the tree. The best time to spray trees is within the first or second week of July and again in late August or September.
For most pest issues, I recommend neem oil. It is organic and very effective. It is often sold as fruit tree spray at stores. Check the label. Here is more information on neem oil: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm