What do you put on dwarf Japanese maple trees when leaves are diseased and turning brown?

When dwarf Japanese maple trees exhibit diseased and browning leaves, it's important to first identify the underlying issue, such as fungal infections or pests. Pruning away affected leaves can help prevent further spread. You can apply a suitable fungicide if a fungal disease is confirmed, and ensure the tree is adequately watered and mulched to promote overall health. Additionally, consider using an insecticidal soap if pests are present.