Leaf Scorch On Japanese Maples: Some maples do not tolerate sudden heat. The most sensitive to scorch are the cut-leaf Japanese maples. The trees just prefer cooler temps and more humidity. Wind makes it worse. Just do your best to keep it moist and it should be fine next spring. Leaf hoppers may also produce similar effects and leaf fungi can be possible also. Plant Identification, <PERSON>, Do Your Best, Fungi, Trees, Leaves, <PERSON>, This Or That Questions, Spring