Barry from Bayville New Jersey writes
If you are dealing with insects that are causing the black leaves and black spots, Fertilome Natural Guard Horticultural Oil RTS may help, but you may be dealing with a disease like peach scab. Bonide Fruit Tree Spray Concentrate may be a better option as this is a liquid fruit tree spray concentrate containing insecticide, fungicide, aphicide, miticide, scalicide, and spreadersticker all in one solution, and is labeled for peach scab. We also recommend contacting your local extension office for assistance with a positive identification of what is ailing your trees, and for appropriate treatment recommendations.
Answer last updated on: 01/14/2022
