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Carpenter Costin's Blog

Preventing and Treating Pine Sawfly Infestations

Posted by Carpenter Costin

May 10, 2012 10:50:00 AM

Pine Sawflies have hatched, or will be hatching soon, throughout our region. Be sure you have the proper management techniques in place.

The Pine Sawfly is a destructive pest that targets the two and three needle pines in New England, meaning they only infest pines where the needles are in bundles, or fascicles, of two and three needles each. Mugo Pines are usually the primary host for Pine Sawflies in the region.

Each year, Pine Sawflies will hatch into the larval stage and feast on two and three needle pines, like the Mugo pine, voraciously. What's unique about Pine Sawfly is that they only feed on the older needles of a pine, usually leaving the young needles unscathed. The Sawfly will form very tight groups and feed quickly, moving throughout a pine until it is completely defoliated.

Treating Pine Sawfly larvae can be done in two methods depending on how the groups are formed. Very small groups of the larvae can be pruned off the tree and disposed of. Larger groups; however, will require an insecticide treatment. Over the counter insecticides, such as Sevin, will work on Pine Sawflies, but be sure you’re familiar with the toxicity level of the product you buy.

Our pest management programs include Pine Sawfly treatments, but you can also choose a target treatment on Mugo Pines, or other pines if you’ve had an issue with this pest in the past. Request a free consultation to learn more about pest management programs.

The video below shows Pine Sawflies in action, as well as the defoliated pine left after just a short amount of time feeding. Look closely to see the Sawfly squirming around.

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Topics: pest management, Insect & Disease Management, plant health care, Pine Sawfly

Pine Sawfly Pest Infestation on North Shore

Posted by Steve Barone

Jul 29, 2011 12:44:00 PM

The calls are beginning to come in. People are noticing Pine Sawfly activity in their yard, and some of the damage already experienced has been devastating. Our Pest Management Programs treat for Pine Sawfly; however, if you are not on a program, it is imperative to act quickly before the sawfly larvae destroy your pines.

We recommend getting out and inspecting your pines for small, catepillar-like larvae. These are the newly hatched Pine Sawfly larvae, and they are on a mission to eat your trees! View the video to see what they look like and see the damage they can cause in just a short period of time.

If you detect Pine Sawfly larvae activity we recommend you contact a Certified Arborist asap. These little pests can do some serious damage to your pines.

consult-with-an-arborist

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Topics: tree care, pest management, Insect & Disease Management, Pine Sawfly