If your tree has peeling bark or branches without leaves, it might have canker disease or root rot. Prune the affected branches, cutting well below the diseased parts.
Root rot impedes the tree's ability to absorb nutrients and water. Improving soil drainage and avoiding overwatering can sometimes be enough to help your tree recover.
Discolored or wilting leaves could be a sign of a disease like chlorosis, often caused by a lack of nutrients, particularly iron. Adjust the soil pH and apply iron supplements.
Fungal growths on or around your tree usually point to internal decay, often a sign of heart rot. Prevent it by ensuring the tree's wounds heal properly and minimizing bark damage.
Powdery mildew and anthracnose are common fungal diseases that damage tree leaves and twigs. Prune affected areas to improve air circulation and apply appropriate fungicides.
Spotted leaves on your tree can be a sign of leaf spot diseases, which could cause continuous and severe leaf shedding over the years. Avoid planting trees too closely together.
A healthy tree can better resist and recover from disease, so ensure your trees get the right amount of water and nutrients, are planted in suitable soil, and are pruned correctly.