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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 Douglas-fir Beetle USFS FIDL #5 
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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MCH Douglas-fir and Spruce Beetle Repellent, ISCA

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.

Active Ingredients: 3-methyl-2-cyclohexen-1-one 97.9% (392 mg)
EPA Signal Word: CAUTION / PRECAUCION
EPA Registration Number: 80286-32
Application Rate Range: 1 or 2 /tree, 40 /acre
Container Size(s): Min. Order 10 pcs.

OUTOF STOCKThis product is currently out of stock and will not be available until 2022. Please see Synergy MCH for alternate product.

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.

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.
From $25.95

BaseLine Insecticide, FMC

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.
From $179.95

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.
From $131.95

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.
From $159.95

Carbaryl 4L Insecticide (Sevin SL), Drexel

Carbaryl 4L Insecticide is for use in Agriculture, Commercial and Residential sites. Carbaryl 4L Insecticide provides broad-spectrum control of more than 130 turf and ornamental pests.

Active Ingredients: Carbaryl 42.6%
Insecticide Mode of Action: 1A
Insecticide Class: Carbamates
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: (see label)
Container Size(s): 2.5 Gal.
From $143.95

Carbaryl 4L Insecticide (Sevin SL), Loveland Products

Carbaryl 4L 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.
From $148.95

ODC Home and Garden, Colloidal Chitosan

ODC Home and Garden, Colloidal Chitosan pre-arms your trees while they still have a fighting chance.

Active Ingredient: Colloidal Chitosan

In Stock, ships within 24 hours.

Synergy Shield MCH Bubble Caps, Douglas-fir and Spruce Beetle Repellent

Synergy Shield MCH Bubble Caps, Douglas-fir Beetle Repellent uses MCH – a naturally occurring anti-aggregation pheromone of the Douglas-fir beetle to protect trees from attack by Spruce, and Douglas-fir beetles.

Active Ingredients: 3-methyl-2-cyclohexen-1-one 97.9% (500 mg)
EPA Signal Word: CAUTION / PRECAUCION
Application Rate Range: 1 or 2 /tree, 40 /acre
Container Size(s): Min. Order 10 pcs.
From $2.10

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