Hello! I planted three Bartlett pear trees in the fall (2023) that I got on sale at the end of the summer season. They were dry, stressed, and missing a lot of leaves, but alive and planted before any winter frosts. They made it through the winter and this spring they had lots of blooms and looked great. But soon after, I started to see black dots on the leaves of one tree. At first it looked to be on only the newest growth, but it spread to all types of leaves in all three trees in a short amount of time. This week it’s gotten worse and now I see yellow dots on some too. (See pics) What can I do to help them? They are in a location with clay soil on a slight slopes so they have drainage. I also added some compost and wood chip mulch around them all this spring to keep them watered, and haven’t seen signs of under/overwatering yet. They are on the west side of my home that’s on a hill, so they get morning sun, and ambient afternoon light, but no afternoon direct sun. Also, I have underplanted them with strawberries, and close by are baby lupine and baby string bean plants, so ideally any treatments won’t hurt those plants or the edibility of their produce too. However, helping the trees fight disease is a higher priority to me, so if I need to dig up and move the under planted plants while fighting the disease, then so be it! Thanks so much in advance for your help!