With the fall season comes an array of colorful leaves in shades of red, orange and yellow. But sometimes those yellow leaves are an indication of a problem and not the beautiful fall weather. The technical term for this condition is chlorosis. Leaves turning yellow prematurely can be caused by a variety of issues, including drought, poor soil drainage or a nutrient deficiency in the soil. More specifically, an iron or manganese deficiency will cause leaves to become chlorotic. This occurs when either these nutrients are not present in the soil or the tree is unable to use them. In Northern Illinois, a majority of the soil has a high PH or is considered alkaline. Alkaline soil may have these nutrients present, but it is unavailable for the plant to use. Iron and Manganese are essential to form chlorophyll and complete photosynthesis. Certain trees are more susceptible to this nutrient deficiency. Trees such as River Birch, Red Maple and Oaks are vulnerable in high PH soils.
A soil test is recommended to determine the actual PH of the soil and the available nutrients. This will help determine the actual cause of the chlorotic or yellow leaves. If it is determined that it is a high PH soil and vital nutrients are being tied up, there are solutions.
Kramer Tree Specialists offers a treatment for chlorosis that provides essential nutrients the tree needs to produce chlorophyll and complete photosynthesis. This treatment is normally done in the fall season, beginning in mid-September. Contact the Plant Health Care department at KTS to discuss this treatment and to have your trees inspected by a Certified Arborist. They can determine if your trees are a viable candidate for this treatment or any other services offered by Kramer Tree Specialists.