Insect & Disease
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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
Pest And Disease Center Pine Sawfly Banner 1440X500
Leaf or Needle Discoloration
Pine Sawfly
Pine sawflies are conifer-feeding insects. They are categorized into two groups: spring species and summer species. Both feed on pine needles, causing the needles to turn yellow or brown. Sometimes the needles are completely consumed.
Pest And Disease Pine Tip And Pine Shoot Moth Banner 1440X500
Webs or Bags
Pine Tip & Pine Shoot Moths
Pine tip and pine shoot moths are the caterpillars of moths that attack conifer trees, causing a drought-like appearance to the tree.
Pest And Disease Pine Wilt Banner 1440X500
Leaf or Needle Discoloration
Pine Wilt Disease
Pine wilt disease is caused by tiny worms called pine wood nematodes and beetles called sawyers that work together resulting in a disease that rapidly discolors and kills pine trees.
Pest And Disease Center Pink Snow Mold Banner 1440X500
Mold or Fungus
Pink Snow Mold
Pink snow mold is a fungal disease that creates patches of dense, whitish-pink grass blades in winter and spring.
Pest And Disease Pitch Canker Of Pine Banner 1440X500
Substance on Leaf or Oozing
Pitch Canker Of Pine
Pitch canker of pine is a severe fungal disease that creates numerous problems for pine trees, including yellowing and browning needles, branch death and formation of cankers.
Pest And Disease Phytophthora Bleeding Canker Banner 1440X500
Substance on Leaf or Oozing
Phytophthora Bleeding Canker
Phytophthora bleeding canker is a disease caused by multiple species of Phytophthora, which invade the bark and outer sapwood of trees.
Pest And Disease Phytophthora Diseases Banner 1440X500
Leaf or Needle Discoloration
Phytophthora Diseases
Phytophthora is a genus containing many species of fungal-like organisms that cause blights, wilts, cankers, root rots and dieback on many plant species around the world.
Pest And Disease Center Powdery Mildew On Lawn Banner 1440X500
Mold or Fungus
Powdery Mildew On Lawns
Powdery mildew can be caused by many different species of fungi. The fungi leave a white powdery appearance on the surface of blades of grass.
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