The Douglas-fir beetle (Dendroctonus pseudotsugae Hopk.) infests and kills Douglas-fir throughout most of its range in western United States, British Columbia and Mexico.
Occasionally western larch trees are infested when growing among Douglas-fir under attack. Attacks in standing larch are always unsuccessful, while those in freshly felled larch are usually successful and brood emergence is equivalent to that in Douglas-fir.
Douglas-fir beetles normally kill small groups of trees, but during outbreaks 100 tree groups are not uncommon. Losses can be devastating during periodic outbreaks, such as four that occurred in western Oregon and Washington from 1950 through 1969, during which 7.4 billion board feet of timber were killed. Outbreaks in standing trees range from 2 to 4 years. Those of longest duration coincide with periods of drought.
Douglas-fir beetle USFS FIDL #5
Wood Boring Insects of Trees & Shrubs
MCH Disrupt Micro–Flake Bark Beetle Pheromone Repellent Flakes are an effective management tool for certain bark beetles on various tree species. MCH is an anti-aggregation pheromone that when applied in the Micro-Flake form can protect susceptible host trees from infestation by Douglas-fir beetle. FREE US Shipping
MCH Douglas-fir Beetle Repellent uses MCH – a naturally occurring anti-aggregation pheromone of the Douglas-fir beetle to protect living trees from attack by spruce and Douglas-fir beetles. It is also used to prevent the build-up of populations on logs, stumps, and fallen trees. MCH sends a message that the tree is full and that beetles should look elsewhere for a suitable host. This Product is Currently Being Manufactured for a March 1, 2018 Ship DateMCH Bubble Cap - Bulk qty. Min. Order 10 pcs. FREE US Shipping
AXXE Broad Spectrum Herbicide is a non-selective, weed control for grasses and broadleaf weeds. It is formulated to deliver maximum performance and provide fast-acting results on a long list of weeds and grasses, as well as most mosses and lichens. OMRI Listed.Sold Individually
Grandevo WDG Bioinsecticide Miticide is a new water dispersible granule formation that contains several active compounds that repel, stop feeding, reduce reproduction and induce mortality to prevent the development of damaging populations of sucking and chewing insects, flies and mites. OMRI Listed.Active Ingredient: Chromobacterium subtsugae strain PRAA4-1 - 30.0% EPA Signal Word - CAUTION / PRECAUCION
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