Apple Tree Losing Leaves
Thank you for your question. Do you follow any type of spraying regimen to control pests and diseases of apple trees? The symptom you describe might be apple scab. If you would like to send us photos, we could take a look at what you're dealing with. It is difficult to cultivate tree fruits successfully in Maryland without following a regular spray schedule, as there are many disease and pest pressures that affect fruit trees in our area. The following web page describes some of the common problems that occur in apple trees -- and what you can do. https://extension.umd.edu/growit/fruits/common-problems-apples-pears
We recommend following the annual spray schedule for apples provided by Virginia Tech, which can be found on the following page. https://extension.umd.edu/growit/home-fruit-preventative-spray-schedule-and-management-common-proble...