Oak Leafroller

Did you spot chewed or curled leaves on your oak or maple tree? Or worse, did you notice the tree’s leaves dropping earlier than they should?

Oak leafrollers may be attacking your oak trees.

Are Oak Leafrollers Harming Your Trees?

Here’s the basic info to help you identify if oak leafrollers are hurting your trees.

  • Susceptible Trees: Oak leafrollers primarily attack gambel oaks. This type of oak is often called a scrub oak, a Rocky Mountain white oak or even a Utah white oak. Oak leafrollers also harm red and white oaks. Occasionally, oak leafrollers even damage maple trees.
  • First Sign: In early spring, the oak leafroller begins to eat tree leaves, causing the leaves to appear curled or chewed. Later, this pest can cause leaves to roll up entirely.
  • Damage: Eventually, you’ll see leaves drop prematurely. If left untreated, oak leafrollers can completely defoliate your tree.
  • Where: Most often, this pest is seen in the Rocky Mountain region. Though, it has on occasion been spotted in the Midwest and East Coast.
  • What Is It: The oak leafroller emerge as larvae in spring. Then, in mid-summer, they become caramel-colored moths with ivory spots.

If you suspect oak leafrollers are eating your tree, contact your local certified arborist to get an official diagnosis and treatment plan. 

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