Navigation

Douglas-fir Beetle

Douglas-fir beetle, Dendroctonus pseudotsugae Hopk.

Douglas-fir beetle
 

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.

 



 

 
RESOURCES:

Douglas-fir beetle USFS FIDL #5 pdf
 
Wood Boring Insects of Trees & Shrubs Wood Boring Insects of Trees & Shrubs
 

FAQ

  • Preventative Treatments:
    Preventative Spraying (Permethrin, Bifenthrin, Carbaryl), Pheromone Repellents (MCH Bubble Caps/Flakes), Tree Baiting, Pheromone Traps & Lures, ODC Colloidal Chitosan, Stand Thinning
  • Post Attack Treatments:
    Removal of Infested Trees

 


 

Sort by

Bifen XTS 25.1% Bifenthrin Insecticide, Control Solutions

Bifen XTS Bifenthrin insecticide provides long lasting protection against Mountain Pine and other Bark Beetles.

Active Ingredient: Bifenthrin 25.1%

Signal Word - WARNING / AVISO
From $39.95

EverGreen Crop Protection EC 60-6 Insecticide, MGK

EverGreen Crop Protection EC 60-6 is a pyrethrin-based botanical insecticide synergized with PBO to maximize control, coverage and efficacy across a wide range of insects and crops. It controls over 100 different insects on most growing crops throughout the entire season including right up until harvest.

Active Ingredients: Pyrethrins 6.0% + Piperonyl butoxide 60%

Signal Word - CAUTION / PRECAUCION
From $89.95

EverGreen Pyrethrum Dust Insecticide, OMRI Listed, MGK

EverGreen Pyrethrum Dust Insecticide is a pyrethrin-based botanical insecticide that controls over 230 insects including Bed Bugs, Fleas, Ants, German Cockroaches, and Ticks. OMRI Listed.

Active Ingredient: Pyrethrins 1.0%

Signal Word - CAUTION / PRECAUCION
From $14.95

PyGanic Crop Protection EC 1.4 II Insecticide, OMRI Listed, MGK

PyGanic Crop Protection EC 1.4 II with 1.4% Pyrethrins Insecticide offers immediate insect control for organic production. PyGanic Crop Protection is an organically-compliant, broad-specturm contact insecticide. OMRI Listed.

Active Ingredient: Pyrethrum 1.4%

Signal Word - CAUTION / PRECAUCION
From $51.95

MCH Douglas-fir and Spruce Beetle Repellent, Bulk

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.

MCH Bubble Cap - Bulk qty. Min. Order 10 pcs.

FREE US Shipping, Canada $ 25
From $2.00

Astro Termiticide Insecticide, FMC

Astro Permethrin 36.8% Termiticide and Insecticide provides effective broad label control of over 100 insects.

Active Ingredients: Permethrin 36.8%
Insecticide Mode of Action Group: 3A
Insecticide Class:
Pyrethroids
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Gal.
From $70.95

Tengard SFR Termiticide Insecticide, UPI

Tengard SFR Termiticide and Insecticide for effective broad label control of over 100 insects.

Active Ingredients: Permethrin 36.8%
Insecticide Mode of Action Group: 3A
Insecticide Class:
Pyrethroids
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1.25 Gal., 55 Gal.
From $18.45

BaseLine 23.4% Bifenthrin Insecticide, FMC

BaseLine Insecticide provides long lasting protection against Mountain Pine and other Bark Beetles.

Active Ingredient: Bifenthrin 23.4%

Signal Word - WARNING / AVISO

From $51.95

Sevin SL Carbaryl Insecticide, Bayer

Sevin SL Carbaryl Insecticide provides broad-spectrum control of more than 130 turf and ornamental pests.

Active Ingredient: Carbaryl 43.0%

Signal Word - CAUTIION / PRECAUCION

From $115.95

Carbaryl 4L Insecticide (Sevin SL), Loveland Products

Carbaryl 4L Insecticide provides broad-spectrum control of more than 130 turf and ornamental pests.

Active Ingredient: Carbaryl 43.0%

Signal Word - CAUTION / PRECAUCION

From $125.95

Filter by:

Clear All
Min: $7.00 Max: $330.00
$7 $330