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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

 


 

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Azera Gardening Insecticide, OMRI Listed, MGK

Azera Gardening Insecticide is a premium organic product with multiple modes of action that provide excellent control of the hardest-to-kill, hard-bodied pests as well as quick knockdown and kill of the most destructive soft-bodied insects.

Organic Certification(s): OMRI
Active Ingredients: Azadirachtin 1.20% + Pyrethrum 1.40%
Insecticide Mode of Action: UN + 3A
Insecticide Class: Pyrethrins
EPA Signal Word: WARNING / AVISO
Application Rate Range: (see label)
Container Size(s): 8 Oz., 1 Qt.

State Registrations Not for Sale to: VT


From $51.95

Bifen XTS 25.1% Bifenthrin Insecticide, Control Solutions

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

Active Ingredients: Bifenthrin 25.1%
Insecticide Mode of Action: 3A
Insecticide Class: Pyrethroids
EPA Signal Word: WARNING / AVISO
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1 Gal.

State Registrations Not for Sale to: VT


From $44.95

EverGreen EC 60-6 Insecticide, MGK

EverGreen 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%
Insecticide Mode of Action: 3A, NA
Insecticide Class:
Pyrethrins, NA
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1 Gal.

State Registrations Not for Sale to: VT


From $114.95

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 Ingredients: Pyrethrins 1.0%
Insecticide Mode of Action: 3A
Insecticide Class:
Pyrethrins
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 10 Oz.

BACKORDERED BY MANUFACTURER This product is currently on backorder from the manufacturer.



State Registrations Not for Sale to: VT


PyGanic EC 1.4 II Insecticide, OMRI Listed, MGK

PyGanic 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.

Organic Certification(s): OMRI
Active Ingredients: Pyrethrum 1.4%
Insecticide Mode of Action: 3A
Insecticide Class: Pyrethrins
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1 Gal.

State Registrations Not for Sale to: VT


From $56.45

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: 3A
Insecticide Class:
Pyrethroids
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 1 Gal.

Product Suggestion   We recommend the use of a spray adjuvant that helps break down waxy cuticle on leaf surfaces like Cide-Kick II with this product.



State Registrations Not for Sale to: VT


From $95.95

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
EPA Registration Number: 70506-6
Application Rate Range: (see label)
Container Size(s): 1 Qt., 1.25 Gal., 55 Gal.

State Registrations Not for Sale to: VT


From $30.45

BaseLine Insecticide, FMC

BaseLine Bifenthrin Insecticide is approved for effective control of general pests. Featuring a concentrated version of the trusted active ingredient Bifenthrin in Onyx and Talstar insecticide. BaseLine Insecticide provides long lasting protection against Mountain Pine and other Bark Beetles.

Active Ingredients: Bifenthrin 23.4%
Insecticide Mode of Action: 3A
Insecticide Class: Pyrethroids
EPA Signal Word: WARNING / AVISO
Application Rate Range: (see label)
Container Size(s): 1 Gal.

State Registrations Not for Sale to: VT


From $195.95

Sevin SL Carbaryl Insecticide, Bayer

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

Active Ingredients: Carbaryl 43.0%
Insecticide Mode of Action: 1A
Insecticide Class: Carbamates
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 2.5 Gal.

State Registrations Not for Sale to: VT


Sevin XLR Plus Insecticide, Bayer

Sevin XLR Plus Insecticide provides broad-spectrum control of dozens of important pests including beetles, weevils and worms in tree fruit, nut, vine, citrus vegetable and other crops.

Active Ingredients: Carbaryl 44.1%
Insecticide Mode of Action: 1A
Insecticide Class: Carbamates
EPA Signal Word: CAUTION / PRECAUCION
EPA Registration Number: 61842-37
Application Rate Range: (see label)
Container Size(s): 2.5 Gal.

State Registrations Not for Sale to: VT


From $187.95

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