Sylwan, 145 (7), 61–64. White pine weevils produce one generation a year. Now other methods are being considered, like the use of natural parasites. 2001b. In Quebec, it is occasionally reported in red pine plantations or Eastern white pine hybridization parks. Recommended material include cyfluthrin (sold as Bayer Advanced Yard and Garden Spray), when the adults first emerge from leaf litter in early to mid-April. Females spend the winter out of sight cooling their six heels in the duff beneath their pine or spruce targets. In western Canada, its distribution coincides with that of various species of spruce. Like most weevils, the adult has a long snout-like beak from which small antennae arise. Therefore, it’s vital to stop them fast. Damage from white pine weevil can be prevented by spraying the upper trunk and terminals of spruce and pine in early to mid-April (25-65 ggd50) and again two weeks later with products that contain either bifenthrin, permethrin or cyfluthrin Cyfluthrin is soid as BioAdvance Vegetable and Garden Insect Spray and you should be able to find it at your local garden or box stores. TreeAzin is a systemic insecticide produced from Neem tree (Azadiracta indica) seed extracts that is injected directly into the base of trees. This harmful pest attacks at least 20 different species of trees. The white pine weevil kills the top of conifers and is the most serious economic insect pest of white pine. Fir (occasionally) The white pine weevil (figure 1) - Pissodes strobi (Peck) (Coleoptera: Curculionidae) - is a native insect attacking eastern white pine (Pinus strobus L.).The latest cytogenetic and breeding studies indicate that two other North American pine weevil species - the Sitka spruce weevil and the Engelmann spruce weevil-also should be classified as Pissodes strobi. Pine weevil Hylobius abietis is the most dangerous pest of restock areas. The pine weevil (Hylobius abietis) is a major forest regeneration pest causing high levels of seedling mortality and economic losses.Current management relies on silviculture, stem coatings and insecticides. a few years ago I found out they were being attacked by White Pine Weevils. Weevils: Root Feeding black vine weevil strawberry root weevil. Currently, I have approximately 30 White Pines on my property. If you have had damage from White pine weevil in the past - now is the time to take corrective action. There are sporadic Asian records from Kazakhstan, China and Japan, and it has been recorded in New Zealand, but is now believed to be absent there. Spruce 2. In Canada, the insect occurs primarily in Scots pine Christmas tree plantations. A shepherd's crook in the new expanding leader is a classic sign that an evergreen tree is infested with the white pine weevil, although other pest attacks may look similar. Changing the environment can help prevent or reduce infestations. Debarking Weevils. Professional applicators may use Tempo (cyfluthrin). In eastern Canada, it prefers the eastern white pine, the jack, Scotch and red pines, and the Norway spruce. The adults will feed on nearby tree branches until it is time to move to the duff for over-wintering. Of just the base? They emerge as adults from late July until early September. The larval stage, which lives beneath the bark, is white with a distinct brown head. For enquiries, contact us. Damage from white pine weevil can be prevented by spraying the upper trunk and terminals of spruce and pine in early to mid-April and again two weeks later with products that contain bifenthrin, permethrin or cyfluthrin. Micro-habitat(s) Bud, Twig, Terminal shoot. A single weevil can lay over 100 eggs. Heavy feeding results in ring barking and eventual death of the tree. 2004. Spray Applications. Finally, the larvae will build pupal cells in the stem, where they remain inactive for five to six weeks. Trees growing in the open without the canopy cover provided by larger trees appear to suffer greater deformation of their trunks. It is also known as the Engelmann spruce weevil and the Sitka spruce weevil. It is a systemic insecticide and should be applied at the time of egg laying, generally early May. Small trees will sometimes die as a result of an infestation. Mechanical Control - If excessive pitch is found, cut open the area of pitch exit and look for the larvae. The trees should be inspected every 2 or 3 days as the weather warms for the presence of the adult weevils on the leaders, in the lake states this normally occurs when suppertime temperatures first break the 50 °F mark. Ornamentals like the mugho pine and blue spruce are also susceptible. See recent articles with pictures about white pine weevil in the MSU CAT Alerts at: http://news.msue.msu.edu/news/article/white_pine_weevil_damage_on_conifers_is_causing_wilted_leaders, https://www.canr.msu.edu/news/control_white_pine_weevil_in_early_spring. Adult weevils feed on the bark of young trees used for restocking. But, for added protection I'm wondering if a topical chemical might be applied to the outside of the trees? Långstrom B., Day K.R. Where chemical insecticides are used, there are costs associated. Damage from white pine weevil can be prevented by spraying the upper terminals of spruce and pine next year in early to mid-April and again two weeks later. 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