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European Pine Sawfly Info

If you’ve spotted caterpillar-like insects on your pines, you might be facing a European Pine Sawfly infestation. These pests can cause significant damage, especially to Scotch and mugo pines. Luckily, there are effective ways to handle them!

Identification: Look for groups of green larvae with black heads feeding on the needles. They’re most noticeable when they cause the needles to look straw-like.

Treatment

  1. Manual Removal: For small infestations, simply wear gloves and wipe the larvae off the branches or shake them off. This can prevent further damage without harming your pines.
  2. Pruning: If the infestation is localized, pruning the affected branches might help. Be cautious, as this can affect the tree’s appearance.
  3. Insecticides: If the larvae are actively feeding on the tree, applying an appropriate insecticide is effective. Wasco Nursery recommends Bug Blaster or Eight to treat European Pine Sawfly. Apply upon notice of insect in May, then every 2 weeks for a total of 2-3 applications.

Prevention: Since these pests return annually, inspect your pines in mid-May for early signs of infestation to act quickly.

By catching an infestation early and using the right approach, you can keep your pines healthy and beautiful!

Imagery:

European Pine Sawfly | Bugs and Blights
Photo Credits: BugsandBlights.com

 

 

Tags:

Mugo Pine Losing Needles, Why does My Mugo Pine look brown, Pine eating caterpillar, Pine Sawfly, Pine Insects, Common Disease and Insects on Pines, Mugo Pine Issues