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Pin oak trees are large shade trees that have an oval-pyramidal shape with glossy, dark green leaves. If given the proper growing environment, a pin oak can grow to be 70 feet tall. Pin oaks prefer full sun and are tolerant of many environmental problems such as flooding and heavy clay soil.

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A Visual Guide - Problems of Oaks Oak groups Oaks are usually divided into two groups: red-black oak group and white oak group. Some problems of oaks are restricted to or are more severe in one group versus the other. It is therefore important to know to which group an oak belongs. Leaf shape is the simplest way of telling one from the other.


Here's a commonly heard problem on the ISU Hortline: "I have a beautiful pin oak in the front yard--it's been there for almost 25 years. And now it's starting to die off and the leaves look terrible. What can I do?"On most Iowa soils, probably the best course of action would have been to never have planted pin oak in the first place.


Oak tree blister can be detected on the top and bottom of the tree's leaves. The surface of the leaves will look blistered, hence the name. On the other side of the leaf, it will look gray colored, but as the disease gets worse, it will turn brown.


The leaves of the southern red oak have a bell-shaped base, are 5-9" long with 3-7 deep lobes. The center lobe is considerably longer than the others and quite narrow. There are bristle tips (tiny hairs) on the end of each lobe (you will not find these bristle tips on the end of the white oak leaf).


The pin oak is susceptible to bacterial and fungal diseases that can cause damage or be fatal to the tree. Preventive measures include the use of insecticides and fungicides for routine maintenance and distance planting between oaks. Check your trees for indications of disease and treat early if infection is found. Bacterial Leaf Scorch


Leaf chlorosis (yellowing) is a perennial problem of pin oak (Quercus palustris) trees in landscapes in many parts of Michigan.Depending on the severity of the problem, trees typically range from bright green to bright yellow.


Oak leaf blister: Spots ¼ to ½ inch in diameter turn light green as young leaves expand. Leaf cells in the spots multiply more than surrounding cells, and a raised blister-like buckling of the leaf results. As the spots age, their upper surface becomes covered with a buff white coating of fungal growth that later turns brown.


Common Oak Tree Diseases. Oak (Quercus) is a versatile plant that provides shade, acts as a windbreak and produces acorns, which, in turn, feed wildlife. This large genus consists of evergreen and ...


during leaf emergence and repeat in 7 to 14 days as needed. Oak Leaf Blister (Fungus – Taphrina caerulescens) Water oak, post oak, red oak and live oak are most often infected with the oak leaf blister fungus. Of these, water oak is the most susceptible. A leaf infected with the fungus will have a distinct bulge on its upper surface. The surface