The next thing you should do is to spray the maple with a suitable fungicide that is easy to find on the market. If necessary, transplant it to a more open area. Also, make sure that the air moves freely around the tree. To solve the problem, you need to make sure that the maple gets enough light. This disease rarely kills maples, but young trees can be severely affected. If nothing is done, the disease will affect the young branches and the leaves will shrivel and fall off. In the early stages of the disease, dark spots appear on the leaves and the leaves curl. This disease is caused by a variety of pathogens and can be quite a serious threat to young maples. Here, anthracnose should be mentioned first. Read more: How often to water a Japanese maple? Diseasesĭiseases can also cause curled maple leaves. So you need to keep a close eye on the moisture of potting soil or transplant the maple into the garden. The potting soil dries out very quickly in hot weather.

Trees that already have a heavy root system rarely suffer in this way.Ĭurling is also very common if you grow maple trees in a pot. Twisting from lack of water often occurs with newly planted maples. The next watering should be no sooner than the soil dries 1-2 inches deep. You need to water the maple with plenty of water, the soil around it should soak in. If you notice this problem in time, it can still be fixed. Another factor that aggravates the situation is the hot wind.Īs a result, the leaves will curl inward and maybe be burnt at the edge. This can happen most often in sunny and hot weather. Spray maple with horticultural oil or acaricide.Īs I mentioned before, the first cause of curled leaves is underwatering. There are traces of insects on the leaves. Transplant the maple to a less wet location.įertilize the maple no more than once a year.

Water the maple only when the soil is two inches dry. If possible, shade the maple for a while. Water the maple with liquid fertilizer and shade it for a few weeks. The leaves curl inward and partially turn purple. Maple leaves have black or brown spots and curl up.Įnsure good air circulation around the maple. Maple leaves curl inward and burn along the edge. What causes Japanese maple leaves to curl?

Red sunset maple old