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Aphid Control and Treatment

Aphids attack a variety of trees including Hemlocks, Spruces, Beeches and Tulip Poplars. Depending on the species, aphids can feed on almost any part of a tree. Their targets include: foliage, twigs and branches, flowers or fruit, and some on roots.

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Here are the warning signs that Aphid Control is needed:

  • Stunted growth
  • Wilted, distorted, curled, yellowed foliage
  • Sticky residue known as “honeydew,”which promotes growth of black, sooty mold. Honeydew attracts ants, flies, hornets, and yellow jackets. It can also ruin the finish on metal objects under aphid-infested ornamental plants.

Other conditions often mimic the Aphid.  Before treating your tree, your Giroud ISA Certified Arborist will evaluate it and confirm that Aphids are the problem.

Control measures can include proper pruning, fertilizing, and watering. Introducing beneficial insects can also play an important role in aphid control. Severe infestations may require chemical control.

This video by Rob Nagy, Giroud ISA Certified Arborist, shows Aphids on a Beech tree and explains the importance of early detection.