1 (1 = rare 5 = annual)

3 (1 = very little damage 5 = plants killed)

Of all the pines in the Midwest, eastern white pine seems to be the one most often attacked.

Tree

• Eastern White Pine (Pinus strobus)

Light infestations do not do much to the tree. However persistent, severely heavy yearly attacks can cause twig death, some stunting, and possible death of the trees. The adelgids produce a wax while feeding. The wax is a protective cover that resembles wool, making them look like wooly aphids to which they are related. Under this waxy wool, the adelgid is teardrop shaped and black in color.

After overwintering on the tree, reproduction occurs in the spring. At least five generations are produced per year. Winged adults can be produced which fly to spruce for additional reproduction; however, this does not appear to occur in the Midwest.

Insecticides can be used to control these insects. Apply in May or later when adelgids are present. In the spring, applya spreader sticker with theinsecticide.

Home, Yard & Garden Pest Guide
The Home, Yard & Garden Pest Guide (C1391) provides is written for homeowners and other residents and provides nonchemical and current chemical recommendations for controlling pests associated with trees, shrubs, turf, flowers, groundcovers, vegetables, fruit, and houses. In addition, you'll find detailed information about integrated pest management, pesticide safety, and pesticide application and calibration techniques. This publication may be purchased at your local University of Illinois Extension Unit office, or by calling 800-345-6087, or by placing an order online (search for "C1391").
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Illinois Commercial Landscape and Turfgrass Pest Management Handbook
The Illinois Commercial Landscape and Turfgrass Pest Management Handbook (ICLT) is written for professional applicators and provides nonchemical and current chemical recommendations as well as application timing information for all major pests of turf, woody ornamentals and herbaceous ornamentals. This publication may be purchased at your local University of Illinois Extension Unit office, or by calling 800-345-6087, or by placing an order online (search for "ICLT").
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U of IL - Distance Diagnosis through Digital Imaging
A free plant, weed, insect and disease identification service available through your local University of Illinois Extension office. Center Educators or State Specialists review & respond to information and digital images submitted by local Extension office personnel. Some samples may require further examination or culture work (nominal fee involved) at the U of IL Plant Clinic.
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U of IL - Plant Clinic
Services include plant and insect identification, diagnosis of disease, insect, weed and chemical injury (chemical injury on field crops only), nematode assays, and help with nutrient related problems, as well as recommendations involving these diagnoses. Microscopic examinations, laboratory culturing, virus assays, and nematode assays are some of the techniques used in the clinic.
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