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Depending on the soil in the local area, it is possible for trees to show signs of iron deficiency. The most common symptoms of iron deficiency are seen on the younger, newly formed leaves, which appear pale green or yellow. When you examine the leave you can see a distinct skeleton pattern on the leaf surface because the veins in the leaf remain green while the soft tissue of the leaf is yellow or pale green. In extreme cases of iron deficiency, the new leaves are all yellow, smaller in size or completely stunted.
Trees often suffer from iron deficiencies, as well as deficiencies of other micronutrients such as copper, zinc and manganese. The deficiencies can occur when the nutrients are depleted in the soil or when the ph level is very alkaline, meaning over a reading of about 7.0. At ph levels over 7.0, trees have a difficult time utilizing key nutrients such as iron. Excessive use of lime or the leaching of lime from gravel, cement and bricks can cause the alkaline soil condition. This is a very common situation where recent construction has occurred or new patio stones have been installed. Alkaline soils are also common in geographical regions where limestone is prevalent and rainfall is low.
It is easy to correct an iron deficiency. Simply place TreeHelp Iron Tablets in the soil at the tree’s drip-line. These chelated iron tablets will slowly release iron and adjust the ph level so that the tree can absorb and utilize the newly replenished iron.