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Insect & Disease
Resource Center

Signs of pests and diseases will vary from tree to tree. Search our database of pests and diseases for symptoms, damages, life cycle, management, and control information.

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Damage & Symptoms
Fotolia 85089638 IPS Beetle M
Leaf or Needle Discoloration
Ips Pine Bark Beetles
All stressed pine and spruce trees are vulnerable attack. Healthy trees are rarely attacked, although where Ips populations are extremely high, healthy trees may be overwhelmed by large numbers of beetles.
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Ss 456412858 Chlorosis On Cherry Tree
Wilted or Curled Leaves
Pest Management | Stress Reduction
There are many abiotic and biotic stressors that can negatively impact tree health. Common stressors can include: air pollution, drought, flooding, improper planting and mechanical injury.
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Adobestock 316184773 Split Gill Fungus Close Up
Mold or Fungus
Split Gill Fungus
Split gill fungus can be found in almost every corner of the world. The fruiting bodies look like small saucers or fans and can be found on living or dead trees.
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Pest And Disease Leafminer Banner 1440X500
Leaf or Needle Discoloration
Arborvitae Leafminer
Arborvitae or cedar leafminers are larvae of small, silver and tan moths. The larvae are small, brownish-black caterpillars that burrow into the leaves of plants.
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Pest And Disease Boxwood Decline Banner 1440X500
Substance on Leaf or Oozing
Boxwood Insects & Mite Pests
There are three types of insects and mites that attack boxwoods Boxwood psyllid, Boxwood leafminer and Boxwood spider mites.
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Pest And Disease Chicken Of The Woods Banner 1440X500
Trunk or Bark Damage
Chicken Of The Woods Mushroom
Chicken of the woods is an edible mushroom with a texture and taste that is said to resemble chicken. The fruiting bodies tend to have many shelves, and can be found up a tree trunk or as a cluster at the base of a tree.
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Pest And Disease Deadman Fingers Banner 1440X500
Mold or Fungus
Dead Man's Fingers Fungus
Dead man’s fingers is a fungal pathogen that grows in small towering groups of three to six mushrooms and resemble fingers coming out of the ground.
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Pest And Disease Dogwood Anthracnose Banner 1440X500
Spotting on Leaf
Dogwood Anthracnose
Dogwoods are treasured landscape trees. A destructive disease known as anthracnose can tarnish their beauty, degrade their health, or even kill the tree.
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