Most trees have leaves that will change colours every time the seasons change. This means that you may see changes three to four times a year depending on where you live. However, they will typically retain some measure of green colouring on their leaves until fall rolls around. During the fall season, trees explode with bright reds, oranges, and vibrant yellows. This is a natural part of their growth and hibernation process. However, if you see these colours in the offseason, it may be a sign that there is a problem. Below, Five Star Tree Services discusses why your leaves may be yellow during the summer and what you can do about it. Should Leaves Turn Yellow in the Summer? If your trees have yellow leaves in the summer, it is a sign that it is suffering from disease, or having a problem with its growth cycle. Having your trees inspected periodically by a trained professional will help you catch problems early. If your trees already have yellow leaves in the offseason, they can identify the cause and suggest a solution. When diagnosed early, suggested treatments can help save the tree. Keep reading for some common causes of yellowing leaves. Improper Watering One of the most common reasons trees start to develop yellow leaves in the summer is due to dehydration. Checking the soil moisture levels will help determine if your trees are getting enough water. Hydration is important all year long, but especially crucial during the hot summer months. If there are dry areas around your tree trunk, it is a good idea to partake in deep root watering to help keep your trees healthy and well-watered. Make sure that you don’t overwater your trees because flooding their roots can also be unhealthy. Lacking Nutrition Just like people, trees need to get the right blend of nutrients in order to remain healthy. If your tree has yellow leaves in the summer and is also getting enough water, chances are it is not getting the nutrients it needs from the soil. If soil testing shows low levels of nutrients, it is a good idea to schedule a deep root fertilization treatment to adjust the levels. In many instances, correcting the soil will help you save the tree. Insect or Pest Infestation Yellow summer leaves are also a sign that a tree has been infested with pests. Some pest is only active in the summer. Some of the most common are: Emerald Ash Borer Asian Long-Horned Beetle Yellownecked Caterpillar Ash Flower Gall Bronze Birch Borer Apple-and-Thorn Skeletonizer Eastern Tent Caterpillar Birch Leafminer Fall Webworm Gypsy Moth And many others The first thing you should do is call an arborist to have the tree inspected. They will be able to identify the root of the problem and formulate a solution to treat the pest infestation. This will help you get rid of the bugs once and for all and save your tree in the process. How We Can Help If you have noticed that one of your trees have begun to develop yellow leaves, give Five Star Tree Services a call as soon as possible. We have been providing tree care services in Toronto for over 10 years. Our skilled arborist would be more than happy to evaluate your tree and suggest a solution to treat the problem, so don’t wait. Contact us at (416) 990-3355 today!