Do Japanese maples lose their leaves in summer?
Japanese maples lose their leaves every fall, so they will appear to be dead until spring when new growth appears. If the tree is still leafless in June after several weeks of spring, it is most likely dead and can be removed.
What does an overwatered Japanese maple look like?
While Japanese Maples can definitely appreciate wet soil especially during its first few years of being planted, over watering is definitely a common cause of decline. If your leaves are turning brown/black at the tips, this could be a sign of over watering.
How often should you water a Japanese maple?
Plan to water heavily twice a week during normal weather and three or even four times weekly in periods of drought. Whether your tree is young or mature, it will grow best in soil kept consistently moist by regular watering and mulching.