For 20 years we’ve had a Japanese maple in perfect health. Just planted some small maple trees and the leaves are curling up.When trees are initially planted is it normal for the leaves to shrivel up The other cause of curling leaves could be bugs and pests. Not really getting brown, just curling up and looking like popcorn. Maple roots, especially the valuable little ones, are sensitive to being over-watered and can die from it. I have a Japanese maple that we planted two years ago and never had a problem. This year, we noted some of the leaves were curling up and drying out. Due to the root, plant structural, and photosynthesis issues which many pests can cause, depending in the pest and severity of the infestation, it can cause curled up leaves. The rest of the tree bloomed out normally, but within a month the leaves … It is a tall tree and offers a large amount of shade. Its characteristics are flat, circular seeds, large pointed leaves and sap-filled shoots and leaves. Needless to say, the poor thing is toast - and I feel especially bad about it because the tree was a gift. I have been watering regularly. Debbie’s maple trees are dropping leaves as a sign of shock. Other signs of a tree in shock include: Leaf scorch; Brown leaf tips; Premature fall color; Stunted twig or flower growth; Late spring budding; Branch dieback I recently uprooted it and out it in a nice open area. Entire leaves may curl and wither when leaf scorch is severe. Curling can also be caused by too much light, as the leaves will try to protect the plant by curling up. Since then, it has slowly but steadily lost all its leaves by curling, drying up and falling off. The Crimson King maple is a cultivated variety of the Norway maple tree. i had a Japanese maple tree that was in a bad area, other trees were around it and it hindered its growth. This could explain the indoor plants curling – try moving the light further away. Leaves Dropping After Transplant and Other Signs of Shock. Following that initial drowning the tree will have a reduced root mass to send up water, oxygen, and nutrients to the leaves. There are certain bugs and pests which are known to cause the curling of cannabis leaves. Curling could be due to over watering (in lower temps the plants likely won’t need as much water). It happened to a laceleaf Japanese maple I planted a few years ago, it leafed out then the leaves started curling and drying, falling off, and whole branches dying. What does it mean when you find your plant's leaves are curling? Not one single leaf has grown over the past 5 months. Leaves on the same branch often show similar symptoms but an entire tree may not be uniformly affected. Scorched leaves are more evident on the sides of the trees most exposed to prevailing winds and strong sunlight. For the last two years the tree’s leaves have started curling and burning up in early June. But transplant shock can look much different for your tree. 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