Insect:Host(s) Description Treatment timing* FRUIT INSECTS Aphids and Aphid eggs are small, black Treat with a dormant oil Mites: Many and shiny and are found at the 1/4" green stage for fruit trees scattered along the twig. aphids and/or at the pre- Mite eggs are smaller, red pink stage for mites. and usually found near the spurs. Eastern Tent Look for conspicuous egg Pick off and destroy all Caterpillar: masses on twigs. They will egg masses found: for Many fruit trees form a dark brown varnished big infestations or large collar or belt encircling operations, insecticidal the twigs. sprays later in the spring may be needed. ORNAMENTAL INSECTS Bagworm: Caterpillars form "bags" Pick off and destroy all Conifers, maples around their bodies, made of bagworms now and/or treat sycamores, box- silk and plant debris. with an insecticide in mid- elders, and many They overwinter as eggs June. others in the bags; the eggs hatch in late May and early June.
SEE: http://www.ext.vt.edu/departments/entomology/factsheets/bagworm.html
Pales Weevil: If you observed any dead. Drench stumps and near-
Eastern white seedlings, dead shoot tips, by soil with a lindane-
and Scots pine, or small irregular patches kerosene mixture (7 tbs of
Douglas-fir, of exposed wood last 20% EC lindane in one
other pines and summer and attributed gallon of kerosene) to
some spruces them to Pales weevil then kill egg-laying adults.
you will need to treat
this spring.
SEE: http://www.ext.vt.edu/departments/entomology/factsheets/paleswee.html
White Pine Look for resinous bleeding Treat only the terminal
Weevil: Eastern in March and early April upright leader down to the
white pine, on the 8 to 10 inches of first whorl of branches. Do
Norway spruce, stem below the terminal not spray the entire tree.
Scots pine and leader. Adult weevils Treat before April 1, prior
occasionally chew holes in the bark to to egg-laying by adults.
other pines feed and lay eggs.
* See Virginia Pest Management Guides for recommendations on insecticides and rates. Use insecticide applications only when high population levels demand control action. Most plants can support small populations of pest insects.
Prepared by Eric R. Day, Department of Entomology, Va Tech, Blacksburg, VA 24060
Revised 2/9/00