![]() Next, only water the Japanese maple when the soil in the root zone is more than two inches dry. The first thing to do is to stop watering frequently if this is the reason for overwatering. In this case, water is not coming to the leaves and they not only start to turn yellow but also dry, i.e. The second thing that can happen is root rot. We already talked about chlorosis in the first chapter. The reason is that if the roots are left wet for a long time they lose their ability to absorb minerals and chlorosis occurs as a result. Overwatering is the next cause of yellowing of the Japanese Maple. After about a week, repeat the spraying with copper fungicide.įor more information on the major diseases that can cause leaf yellowing, see Japanese Maple Diseases. If yellow or brown spots appear on the leaves, spray them with a multi-purpose fungicide. Provide good ventilation around the crown. How to fixĬonstantly monitor your maple for spots or other unhealthy signs on both leaves and branches. Sometimes the entire leaf may turn yellow and fall off. Over time, the spots will turn brown and their yellow edge will expand. Depending on the disease, the spots can be small or cover most of the leaves. Usually, yellow spots appear on the leaves first. Most of them cause the leaves to turn yellow or become discolored. There are a number of diseases that affect the Japon maple. The Japanese maple has turned yellow due to disease. This usually solves the problem of chlorosis fairly quickly if it is due to iron deficiency. You can also add liquid iron chelate to your maple. One such fertilizer per year is enough for normal growth. Usually, manufacturers of such products make them complex, which means they contain all the above minerals. Make sure the product contains nitrogen, phosphorus, potassium, iron, magnesium, and zinc. The next step is to fertilize the Japanese Maple with a slow-release fertilizer. If the soil pH is above 7.0 use aluminum sulfate or garden sulfur to get it down to at least 6.0-6.5. Use it to find out what kind of soil you have. You can find special products on the market that contain iron and are designed specifically for the treatment of chlorosis. To quickly improve your tree, spray foliar fertilizer directly on the leaves. We will talk about this in a later chapter. In this type of soil, the tree is not able to consume the necessary minerals, even though they are present.Īnother cause of chlorosis is overwatering. This means that the soil is poor and unable to meet the nutritional needs of maples. The first cause is a banal lack of nutrients in the soil. For this reason, the problem must be studied and solved holistically. This is a disease associated with the plant’s inability to photosynthesize and produce chlorophyll for normal growth. If the Japanese maple doesn’t get iron, zinc, and magnesium regularly, it will develop chlorosis. The Japanese maple is yellowing due to a mineral deficiency. ![]()
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