Hemlock woolly adelgid, commonly abbreviated as HWA, is a true bug native to East Asia that feeds by sucking sap from hemlock and spruce trees. In eastern North America, it is a destructive pest that poses a major threat to the eastern hemlock and the Carolina hemlock. The range of Eastern Hemlock extends north of the current range of the adelgid, but there are fears that the adelgid could spread to infect these northern areas as well.
Accidentally introduced to North America from Asia in 1924, HWA was first found in the eastern United States some decades later. In Pennsylvania, for example, the earliest record is from 1967. The pest has now been established in eleven eastern states from Georgia to Massachusetts, causing widespread mortality of hemlock trees. As of 2007, 50% of the geographic range of eastern hemlock has been impacted by HWA.
The presence of HWA can be identified by its egg sacs, which resemble small tufts of cotton clinging to the underside of hemlock branches. Hemlocks stricken by HWA frequently shift to a grayish-green appearance rather than the dark green of healthy hemlocks. In North America, the hemlock woolly adelgid reproduces asexually and can have two generations per year. Between 100 and 300 eggs are laid in the woolly egg sacs beneath the branches. Larvae emerge in spring and can spread on their own or with the assistance of wind, birds and/or mammals. In the nymph stage, the adelgid is immobile and settles on a single tree.
The hemlock woolly adelgid feeds on the phloem sap of tender hemlock shoots. It may also inject a toxin while feeding. The resulting desiccation causes the tree to lose needles and not produce new growth. In the northern portion of the hemlock's range, death typically occurs four to ten years after infestation. Trees that survive the direct effects of the infection are usually weakened and may die from secondary causes.
Discus N/G Insecticide is a versatile, broad-spectrum product that gives long-term con- trol of many insects. Discus N/G is safe on virtually all plant material, offering control of a wide range of insects.Active Ingredients: Cyfluthrin 0.70%, Imidacloprid 2.94%Insecticide Mode of Action:Insecticide Class:EPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 1 Gal.
This product has been discontinued by the manufacturer. Please consider Discus L Insecticide, OHP
Dominion 2L Insecticide, a 21.4% imidacloprid provides long lasting control for Emerald Ash Borer (EAB), adelgids, armored scales, termites and many other boring and sucking insects.Active Ingredients: Imidacloprid 21.4%Insecticide Mode of Action: 4AInsecticide Class: NeonictinoidsEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 27.5 Oz., 2.15 Gal.
Pointer Imidacloprid Insecticide is one of the most widely used and proven-effective insecticides on the market today. Pointer provides reliable systemic insect control on a wide variety of landscape ornamentals.Active Ingredients: Imidacloprid 5.0%Insecticide Mode of Action: 4AInsecticide Class: NeonicotinoidsEPA Signal Word: WARNING / AVISOEPA Registration Number: 69117-1Application Rate Range: (see label) Container Size(s): 120 ml., 1000 ml.
This product is drop-shipped by the manufacturer and will be shipped UPS Ground regardless of method chosen at checkout.
Retriever Acetamiprid Insecticide for tree injection application using the Wedgle direct-inject system to ornamental or non-bearing fruit and nut trees. Retriever Insecticide may be applied by injection directly into ornamental or non-bearing fruit and nut trees.Active Ingredients: Acetamiprid 8.5%Insecticide Mode of Action: 4AInsecticide Class: NeonicotinoidsEPA Signal Word: CAUTION / PRECAUTIONApplication Rate Range: (see label) Container Size(s): 120 ml., 1000 ml.
This product is drop-shipped by the manufacturer and will be shipped UPS Ground regardless of method chosen at checkout.
Transtect 70WSP Insecticide is a soil applied, systemic insecticide that provides season long control of a broad spectrum of pests. It’s unique properties provide rapid uptake and efficacy.Active Ingredients: Dinotefuran 70.0% Insecticide Mode of Action: 4AInsecticide Class: NeonicotinoidsEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 20 WSP Pack Canister
The Tree Tech Microinjection Insecticides set a new standard for economical and environmentally safe tree health care. As traditional methods of applying chemicals and pesticides become less suited for environmentally sensitive uses, particularly in urban areas, the Tree Tech microinjection system continues to gain acceptance and wider use.Sold Individually, Case Qty. = 25 Micro-injectors
Arena 0.25 G Granular Clothianidin Insecticide Provides the best control and the longest-lasting residual out there. Active Ingredients: Clothianidin 0.25%Insecticide Mode of Action: 4A Insecticide Class: NeonicotinoidsEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 30 Lbs.
Arena 50 WDG Insecticide Provides the best control and the longest-lasting residual out there.Active Ingredients: Clothianidin 50.0%Insecticide Mode of Action: 4AInsecticide Class: NeonicotinoidsEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 40 Oz.
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 + 3AInsecticide Class: PyrethrinsEPA Signal Word: WARNING / AVISOApplication Rate Range: (see label) Container Size(s): 8 Oz., 1 Qt.
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: PyrethroidsEPA Signal Word: WARNING / AVISOApplication Rate Range: (see label) Container Size(s): 1 Gal.
Bifen XTS Bifenthrin insecticide provides long lasting protection against Mountain Pine and other Bark Beetles.Active Ingredients: Bifenthrin 25.1%Insecticide Mode of Action: 3AInsecticide Class: Pyrethroids EPA Signal Word: WARNING / AVISOApplication Rate Range: (see label) Container Size(s): 1 Qt., 1 Gal.
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: CarbamatesEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 2.5 Gal.
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: CarbamatesEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 2.5 Gal.
CoreTect Tablet Insecticide contains the world's #1 tree and shrub insecticide found in Merit plus fertilizer. Active Ingredients: ImidaclopridInsecticide Mode of Action: 4AInsecticide Class: Neonicotinoids EPA Signal Word: CAUTION / PRECAUCIONFertilizer Analysis: 12-9-4Application Rate Range: (see label) Container Size(s): 250 Tablets
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, NAInsecticide Class: Pyrethrins, NAEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 1 Qt., 1 Gal.
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: 3AInsecticide Class: PyrethrinsEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 10 Oz.
This product is currently on backorder from the manufacturer.
Mainspring GNL Insecticide uses a novel active ingredient to quickly control chewing and sucking pests such as leafminers, caterpillars and thrips.Active Ingredients: Cyantraniliprole 18.66% Insecticide Mode of Action Group: 28 Insecticide Class: Anthranillic diamideApplication Rate Range: (see label) Container Size(s): 1 Pt.
Mallet 75WSP Insecticide a broad-spectrum insecticide for use on turf, ornamentals and crops.
In stock, ships within 24 hours.Active Ingredients: ImidaclopridInsecticide Mode of Action: 4AInsecticide Class: NeonicotinoidsEPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 4 x 16 Oz. Pkg, 4 x 4 x 16 Oz. Case
This product has been discontinued by the manufacturer.
Merit 75WP Imidacloprid Insecticide provides the longest-lasting insect control at exceptionally low use rates.Active Ingredients: Imidacloprid 75.0%Insecticide Mode of Action:Insecticide Class:EPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 2 Oz.
Merit 75WSP Imidacloprid Insecticide provides the longest-lasting insect control at exceptionally low use rates.
Active Ingredients: Imidacloprid 75.0%Insecticide Mode of Action: 4AInsecticide Class: Neonicotinoids EPA Signal Word: CAUTION / PRECAUCIONEPA Registration Number: 432-1318Application Rate Range: (see label) Container Size(s): 4 x 1.6 Oz. Pkg.
Onyx EC Bifenthrin Insecticide provides long lasting protection against Mountain Pine and other Bark Beetles.Active Ingredients: Bifenthrin 23.4%Insecticide Mode of Action: 3AInsecticide Class: PyrethroidsEPA Signal Word: WARNING/ AVISOApplication Rate Range: (see label) Container Size(s): 1 Qt.
This product has been discontinued by the manufacturer. Please consider BaseLine Insecticide, FMC.
Onyx Pro Insecticide for Commercial Non-Food Use in Interiorscapes and on Outdoor Ornamentals, Christmas Trees, Nurseries, Lawns, Sod Farms, and Golf Courses.Restricted Use: YesActive Ingredients: Bifenthrin 23.4%Insecticide Mode of Action: 3AInsecticide Class: PyrethroidsEPA Signal Word: WARNING/ AVISOEPA Registration Number: 279-4269Application Rate Range: (see label) Container Size(s): 1 Qt.
This product is a Restricted Use Pesticide and requires an Applicator's License for purchase. The Applicator's License must match the state for shipping.
Treegator Original is a slow release watering bag that is perfect for newly planted or established trees from 1 to 8 inches in trunk diameter, with branches beginning at least 25 inches from the ground or higher.
ALL SALES ARE FINAL. No refunds, returns, or exchanges.
Ooze Tube Professional Tree Establishment patented system specifically engineered to establish trees in under-irrigated sites with minimal cost and maximum survival.
ALL SALES ARE FINAL. No refunds, returns, or exchanges.
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 / PRECAUCIONApplication Rate Range: 1 or 2 /tree, 40 /acre Container Size(s): Min. Order 10 pcs.
Not for Sale to: CA, VT
ALL SALES ARE FINAL. No refunds, returns, or exchanges. This product is perishable.
Synergy Shield Pine Beetle Repellent Verbenone Pouch, for Mountain Pine, Southern Pine, Western Pine and other Bark BeetlesActive Ingredients: Verbenone, 4,6,6-trimethyl-bicyclo(3.1.1) hept-3-en-2-one EPA Signal Word: CAUTION / PRECAUCIONEPA Registration Number: 90515-2 Application Rate Range: 1 or 2 /tree, 20 - 60 /acre Container Size(s): Sold in Multiples of 10 pcs.
Not for Sale to: CA, VT
ALL SALES ARE FINAL. No refunds, returns, or exchanges. This product is perishable.
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.
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. Organic Certification(s): OMRIActive Ingredients: Chromobacterium subtsugae strain PRAA4-1 30.0% Insecticide Mode of Action:Insecticide Class:EPA Signal Word: CAUTION / PRECAUCIONApplication Rate Range: (see label) Container Size(s): 20 Lbs.
Hemlock woolly adelgid, commonly abbreviated as HWA, is a true bug native to East Asia that feeds by sucking sap from hemlock and spruce trees. In eastern North America, it is a destructive pest that poses a major threat to the eastern hemlock and the Carolina hemlock. The range of Eastern Hemlock extends north of the current range of the adelgid, but there are fears that the adelgid could spread to infect these northern areas as well.
This product has been discontinued by the manufacturer. Please consider Discus L Insecticide, OHP
Not for Sale to: VT 
