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Browse these bulletins to learn about the causes of branch flagging, insect defoliators, exotic insect and disease pests, conifer problems, and current disease issues.
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Forest Health Highlights
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Forest Health Alerts
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Anthracnose of Shade Trees1.19 MB
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Learn how anthracnose affects many species of deciduous trees and shrubs.
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Armillaria Root Rot2.07 MB
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Armillaria root rot affects more than 200 species of hardwoods and conifers.
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Defoliating Caterpillars1.35 MB
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Learn more about caterpillars that defoliate Missouri's trees.
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Fall Webworm1.56 MB
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Fall webworms defoliate trees and spin webs. Learn how to spot them and how to help your trees.
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Shortleaf Pine Mortality1.57 MB
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Ips beetle attacks can kill shortleaf pines. Learn how to deal with an attack.
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Finding EAB in Winter971.40 KB
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Bark blonding on ash trees in winter could be a sign of emerald ash borers.
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Japanese Beetles1.45 MB
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Learn how to stop these insects before they eat all the leaves off your tree.
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Jumping Oak Gall962.47 KB
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This tiny native wasp can cause the leaves of white oaks to turn brown.
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Hypoxylon Canker1.09 MB
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This disease of oaks and other hardwoods is common after drought.
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Oak Wilt1.16 MB
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This oak disease spreads easily in the spring. Learn to identify and prevent it.
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Urban Tree Decline1.40 MB
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Drought and other stressors cause urban trees to lose health and vigor.