![]() ![]() ![]() Some species look like a seashell others look like a soft cotton ball. Trees are exposed to a variety of scale species-some more damaging than others-that vary drastically in appearance. Scale are small pests (ranging from 1/8 to ½ inch) that feed on the sap from leaves and branches. When caring for trees of these varieties, make sure they receive the correct amount of water and plenty of oxygen/nutrients in the soil! This will help prevent root rot. Because the soil in many parts of Utah is clay-heavy, it drains poorly, so you’ll want to make sure you water the right amount for your tree! Root rot can occur in any plant that is overwatered, especially if it is planted in bad soil.Įven so, tree varieties such as apple, boxelder, chestnut, cottonwood, elm, maple, oak, pear, stone fruit, and willow are particularly susceptible to root rot and fruit rot. Roots can rot if they are overwatered in poorly draining soil or if they develop a root-eating fungus. Make sure to leave plenty of room between the trees you plant in your yard to prevent the fungus that causes leaf spot from spreading. Leaf spot disease usually affects aspen, boxelder, chestnut, cottonwood, laurel, and maple trees, especially if the trees are planted close together. Some other ways to help prevent this and other fungal diseases are to clean up dead leaves in the fall. Stewart’s leaf spray treatment can help combat this fungus and prevent it from spreading. While it’s unsightly, it doesn’t usually cause serious, lasting issues. The leaf spot fungus spreads in the spring and damages trees throughout the summer months. Foliage damage will become progressively worse, and often the leaves will fall off of the tree prematurely. It starts with small dots of discoloration and gradually spreads until the foliage is covered in black/brown spots (and lesions in some cases). Leaf spot is a fungal disease that causes brown and black spots to develop on tree leaves. Stewart’s has an iron chlorosis treatment program for trees struggling with iron deficiencies. To survive, these trees need chelated iron injections either into the soil or directly into the trunk (depending on the size of the tree). Iron chlorosis is a common problem in Utah because the alkaline soil makes it too difficult for maples, oaks, and other tree varieties to intake the iron in the soil. Eventually, the leaves start to turn yellow around the edges they then turn completely yellow and fall off of the tree prematurely. This usually begins in the spring and summer. The deficiency first turns the leaves light green, causing leaf veins to appear dark green. ![]() Iron chlorosis occurs in maple trees when their roots struggle to absorb iron in the soil. Some varieties of aphids also create a white, fluffy substance that sticks to the branches. ![]() You may also see the aphids themselves-tiny black or gray specks-on the leaves and branches. If aphids are attacking your tree, you’ll see shriveled, sticky-looking leaves clumped together. However, some varieties prefer to feed on branches, roots, and twigs instead of new leaves. Aphids prefer to feed on new growth, so they are most common in spring and early summer. They feast on a variety of tree foliage, including maple, apple, ash, aspen, beech, birch, cottonwood, stone fruit, willow tree varieties, and more. Many varieties of aphids exist, and they can cause a lot of damage to a tree’s foliage that may eventually prevent the tree from receiving all the nutrients it needs. In addition to maple trees, anthracnose affects ash, boxelder, oak, and sycamore trees in Utah but it can be treated with leaf disease control sprays. When this happens, the disease becomes much more difficult and expensive to treat because it requires injections into the trunk. Multiplying on leaves during cool, wet spring weather, anthracnose causes the leaves to turn brown and dry out near the veins at first, then it spreads over the whole leaf.Īnthracnose can also spread to twigs and branches on the tree. Anthracnose AnthracnoseĪnthracnose is a leaf disease caused by various types of fungi that survive the winter months in dead leaves and twigs. Learn how to prevent these diseases and how to treat them if your tree is already struggling. They most commonly suffer from the following: Maple trees suffer from a variety of problems. ![]()
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