2018 Proposed Herbicide Treatments

U.S. Department of the Interior
National Park Service
Alaska Exotic Plant Management Team



Denali National Park & Preserve
  • Bird Vetch in the park entrance area –Because of the persistent qualities of Bird vetch and the ineffectiveness of manual control, herbicide treatments will continue in 2017.
    Proposed treatment area: 0.0007 acres
    Proposed herbicide: Milestone
    Proposed application: June-July
  • Narrowleaf Hawksbeard at the sewage lagoon - This infestation had been manually controlled in the past with no decrease in the infestation size or density. Herbicide treatments are necessary to target smaller persisting populations within the sewage lagoon area.
    Proposed treatment area: 0.25 acres
    Proposed herbicide: Milestone
    Proposed application: June-July
  • Yellow Toadflax at the railroad depot - This infestation had been manually controlled in the past with no decrease in the infestation size or density. Herbicide treatments are necessary to effectively control this species.
    Proposed treatment area: 0.0001 acres
    Proposed herbicide: Milestone
    Proposed application: June-July
  • Ground Clover in park entrance area - This infestation that had been manually controlled in the past with no success. Herbicide treatments are necessary to control this species effectively.
    Proposed treatment area: 0.0006 acres
    Proposed herbicide: Milestone
    Proposed application: June-July
  • Ground Clover in park entrance area - This infestation that had been manually controlled in the past with no success. Herbicide treatments are necessary to control this species effectively.
    Proposed treatment area: 0.0006 acres
    Proposed herbicide: Milestone
    Proposed application: June-July

  • Common Dandelion at the Kantishna Airstrip, Fanny’s cabin, Quigley Ridge Trailhead and Mile 70-85 on park road – Past manual removal has had no success. These sites will be treated with herbicide as this is the only effective means of control for this species.
    Proposed treatment area: 0.25 acres
    Proposed herbicide: Milestone
    Proposed application: June-July
  • Big Leaf Lupine at Mile 7 of park road - Past manual removal has had no success. This site will be treated with herbicide as this is the only effective means of control for this species.
    Proposed treatment area: 0.0005 acres
    Proposed herbicide: Milestone
    Proposed application: June-July
  • Flixweed at the Tek Gravel Pit – This pit is used for top soil in restoration projects. Herbicide is the only effective means of control for this species.
    Proposed treatment area: 5 acres
    Proposed herbicide: AquaMaster
    Proposed application: June-July
  • Pineapple Weed, Lambsquarters, and Chickweed in the Kennel’s compost pile area. Past manual removal has had no success. This site will be treated with herbicide as this is the only effective means for these species.
    Proposed treatment area: 0.0008 acres
    Proposed herbicide: Milestone
    Proposed application: June-July

Juneau NPS Office for Southeast Alaska Parks

  • Orange Hawkweed, Oxeye Daisy and Creeping Buttercup will be treated with herbicide as this is the only effective means of control for these species.
    Proposed treatment area: 0.5 acres
    Proposed herbicide: Milestone
    Proposed application: June

Glacier Bay National Park & Preserve

  • Perennial Sowthistle on Strawberry Island - This species does not respond to manual control methods. Herbicide treatment is necessary for effective control.
    Proposed treatment area: 0.80 acres
    Proposed herbicide: Milestone
    Proposed application: late July
  • Reed Canary Grass at the Maintenance Yard & Bartlett Cove roadsides - Manual control methods are not effective on this species due to its dense rhizomes. Herbicide treatment is necessary for effective control.
    Proposed treatment area: 1.5 acre
    Proposed herbicide: AquaMaster
    Proposed application: late July
  • Creeping and Tall Buttercup in Bartlett Cove –These plants can easily become a groundcover creating a large land disturbance when manually removed. Herbicide treatment is necessary for effective control.
    Proposed treatment area: 0.5 acres
    Proposed herbicide: Milestone
    Proposed application: late July

Katmai National Park & Preserve

  • Dandelion at Various Locations and Lodges –Herbicide treatments have been very successful at reducing dandelion density and enabling native plants to re-establish at Fure’s Cabin and Brook’s Camp Campground.
    Proposed treatment area: 0.89 acres
    Proposed herbicide: Milestone
    Proposed application: June, preferred
  • Sheep Sorrel, Fall Dandelion, and Common Dandelion at Lake Camp - Manual control of these species in the past had no effect. Herbicide treatment is necessary for effective control.
    Proposed treatment area: 1.82 acres
    Proposed herbicide: Milestone
    Proposed application: June to August
Kenai Fjords National Park
  • Herbicide treatment in the Exit Glacier area. There are six common dandelion (Taraxacum officinales) infestations located around the Exit Glacier area. A small population of smooth brome (Bromus inermis) is found along Herman Leirer Road. These populations were manually controlled in the past with little decrease in population and have responded well to herbicide treatments.
    Proposed treatment area: 2.0 acres
    Proposed herbicide: Milestone and AquaMaster
    Proposed application: June - August

  • Herbicide treatment in the Coastal Fjords. There are two common dandelion infestations in the coastal area of the park. One is found on a hillside south of Dinglestadt Glacier in McCarty Fjord. The other site is located at the head of North Arm in Nuka Bay. It is located in an undisturbed area in the meadow on the east side at the head of the bay. These site are responding well to herbicide treatment. Herbicide treatments are necessary to control this remote population that only can be visited once per summer.
    Proposed treatment area: 0.0014 acres
    Proposed herbicide: Milestone
    Proposed application: June – July

  • Herbicide treatment in the park maintenance facility. A variety of invasive plants are being treated in the maintenance facility yard including common dandelion, annual bluegrass (Poa annua), common chickweed (Stellaria media), mouse-ear chickweed (Cerastium fontanum), pineapple weed (Matricaria dicoidea), and common plantain (Plantago major). These invasive plant species were manually controlled in the past with no decrease in the size or density of the population and are responding well to herbicide treatments.
    Proposed treatment area: 0.12 acres
    Proposed herbicide: Milestone and AquaMaster
    Proposed application: June – September

  • Herbicide treatment in the Headquarters building parking lot in Seward. A variety of invasive plants are being treated in the parking lot including common dandelion, annual bluegrass (Poa annua), quackgrass (Elymus repens), common chickweed, mouse-ear chickweed, pineapple weed, curly dock (Rumex crispis), white clover (Trifolium repens), alsikes clover (Trifolium hydridum), oxeye daisy (Leucanthemum vulgare), and common plantain. The parking lot has become densely infested with invasive plants that are not found in the park and could be carried on park vehicles into the park. 2018 will be the first year this site is treated with herbicide.
    Proposed treatment area: 0.2 acres
    Proposed herbicide: Milestone and AquaMaster
    Proposed application: June – August

Klondike Gold Rush National Historical Park

Skagway Unit of the Park
  • Maintenance yard, focusing especially on areas used for materials staging for materials used in the backcountry and for areas used in flight operations. Target species include yellow toadflax, white sweet clover, white campion and sheep sorrel.
    Proposed herbicide: Milestone
    Proposed application: hand pull once/ month mid-June- September, and spray treatment in mid-June and follow up in July- September as needed

Chilkoot Trail Infestations
  • Reed Canary Grass at Sheep Camp – because of its isolated location and status as a popular camping destination along the Chilkoot Trail.
    Proposed treatment area: 0.0056 acres
    Proposed herbicide: Aquamaster
    Proposed application: Late July
  • Tall Buttercup at Sheep Camp – Since other treatment methods have not been effective, it is necessary to use herbicide on the tall buttercup to eradicate it.
    Proposed treatment area: 0.00011 acres
    Proposed herbicide: Milestone
    Proposed application: Late July
  • Common Dandelion at Sheep Camp ranger station – because of its isolated location and high visitation.
    Proposed treatment area: 3 acres
    Proposed herbicide: Milestone
    Proposed application: Late July
Dyea Area Infestations

These applications have been discussed and recommended by the AK Regional Office Exotic Plant Management Team. Herbicide at these sites will be applied by the Invasive Plant SCA intern, who has been trained by the AK Regional Office staff and will be operating under their permit as per a signed Categorical Exclusion.

  • White Sweetclover north of Taiya Bridge – After manually treating the plants in June, herbicide will be used near the end of the season to kill off seed growth and remaining roots. We will target first-year rosettes for spraying. Second year plants will be hand pulled.
    Proposed treatment area: 0.0032 acres
    Proposed herbicide: Milestone
    Proposed application: pre-flower bud stage and rosettes (mid to late May)
  • Common Sorrel, Tall Buttercup, and White Clover at the Dyea Townsite trailhead (location of new orientation kiosk). Needs removal for native plant garden and a future interpretive sign. Currently, cars and horses are traveling over this infested island, causing potential further infestation.
    Proposed treatment area: 0.011 acres
    Proposed herbicide: Milestone
    Proposed application:mid-June if possible.
  • Oxeye Daisy north of Taiya Bridge has been persisting since last year, manual removal will be supplemented by spraying herbicide, Tall Buttercup can also be treated here.
    Proposed treatment area: 0.06304 acres
    Proposed herbicide: Milestone
    Proposed application: pre-flowering (early June)

Wrangell-St. Elias National Park & Preserve

Locations

Park Headquarters in Copper Center

Proposed treatment Area: 3.25 acres

Joint NPS/BLM Maintenance Yard in Glennallen
Proposed treatment area: 2.9 acres

Ranger Station & Seasonal Housing in Slana
Proposed treatment area: .5 acres


Nabesna Rd & Tok Cutoff Intersection in Slana
Proposed treatment area: 12.6 acres


Kuskulana Gravel Pit, Mile 17 on the McCarthy Road
Proposed treatment area: 2 acres

Proposed Herbicides
Milestone
Manufacturer: Dow AgroSciences
Active Ingredient: Aminopyralid
EPA Registration Number: 62719-519


AquaMaster
Manufacturer: Monsanto
Active Ingredient: Glyphosate
EPA Registration Number: 524-343


Low Vol 4 Ester Weed Killer
Manufacturer: Loveland Products
Active Ingredient: 2, 4-D (2,4-Dichlorophenoxyacetic acid)
EPA Registration Number: 34704-124


Proposed Application Window
May 1st through September 15th

Last updated: April 30, 2018