Bell's honeysuckle (left) Musk thistle in abandoned industrial lot of Milwaukee, WI (center) Red morph of Scotch broom in forestlands of Clatsop County, OR (right)
Sierra Valley Resource Conservation District Noxious Weed Selfie (left) Roadside thistle spotted while traveling from Northern California through Idaho to Washington. Captive Audience (right) A curious herd of yearlings looks on as weed managers staked sites for monitoring a four year Musk Thistle eradication effort in Sierra Valley California.
The Dark Queen's revenge (top right) Red clover: harmless or dangerous? (left) What does the fox say? (bottom right)
Life on the Powder River - Sheridan County Wyoming Leafy Spurge Panorama
Angela Yuska - Littlefork, MN
Roadside spraying for meadow knapweed and wild parsnip on the Wisner State Forest Road, Koochiching State Forest, Minnesota.
Patricia Gilbert - US Army Corps of Engineers
Leafy Spurge on my property growing in a mature cottonwood tree by my bee hive. (left) Rhodamine Dye application to determine contact exposure times using barriers before treating Eurasian watermilfoil with Endothall and Triclopyr below Fort Peck Spillway. (top right) Invasiveness of Yellow sweetclover on Willow Creek Road in Valley County. (bottom right)
Jim Alwill - Illinois Department of Transportation
Teasel showing 4 generations in one location: 1. this year's teasel spouts in the mowed grass ( teasel carpet), 2. last year's teasel sprouts now good sized rosettes, 3. Last year's teasel rosettes now bolted and past flowering, 4. the seed heads are holding the fourth generation of teasel. Notice how all the turf grass has been smothered out by the teasel.
Jesse Honeycutt and LeeAnne Mila - El Dorado/Alpine County Department of Agriculture.
Tall whitetop: The weed that tried to win the West. Deputy Agricultural Biologist, LeeAnne Mila, works along HWY 50, a prime noxious weed nursery corridor, in El Dorado County. (left, Photo by Jesse Honeycutt) Keeping Grover Hot Springs, a California State Park, native. Agricultural Biologist Technicians work to thwart Canada thistle upstarts in Alpine County. (middle, Photo by LeeAnne Mila) Finding her passion in Alpine County. Standing in a sea of Tall whitetop, Agricultural Biologist Technician, Jana Rapetti, helped eradicate this entire infestation. (right, Photo by LeeAnne Mila)
Chris Benda - Makanda, IL
Japanese Stiltgrass (Microstegium vimineum) is easily transported by the boots of hikers. (left) Japanese Barberry takes over an oak woodland in the Chicago region. (top right) Emerald Ash Borer Carvings (bottom right)
Japanese Knotweed in neighbor's yard.
Park County Weed & Pest Control District Searching for Oxeye daisy (left) Searching for spotted knapweed (top right) Musk thistle shooter (bottom right)
Curt Oien (wildlife seasonal at Three Rivers Park District) is standing in front of a newly detected infestation of the invasive vine, Oriental bittersweet (Celastrus orbiculatus) at Elm Creek Park Reserve. The strangling vines encased the surrounding area hiding underneath their true destruction of girdling and toppling over many mature trees.
Shantell Frame-Martin - Helena, MT
Hoary alyssum flower (Berteroa incana), Priority 2B state listed noxious weed in Montana. (top left) Dyer’s woad flowers (Isatis tinctoria), Priority 1A state listed noxious weed in Montana. (bottom left) Field bindweed flowers (Convolvulus arvensis), Priority 2B state listed noxious weed in Montana. (right)
George C. Fox
Dakota Prairie Grasslands Spurge Beetle bug release sites near Ash Coulee. Approximately 75,000 beetles were released in 25 different drops that day.
Lesley Beckworth - Jackson Hole, WY
Mecinus janthiniformis hard at work in Jackson Hole. (left) Dalmatian toadflax in Jackson Hole. (right)
Fields of Medusahead (top left) Milestone application in September (bottom left) Medusahead close up (right)
Yellow Flag Iris found at Pablo Waterfowl Production Area (WPA), MT (left) Spurge Hawk Moth at Benton Lake National Wildlife Refuge, MT (top right) Spraying weeds from ATV spray rig using handgun. (bottom right)
Pollinator on musk thistle, near Arlee, Montana(left) Field crews from Montana State University and USDA-ARS in Miles City and Sidney, MT, come together to sample long-term revegetation project near Hamilton, MT. (center) Montana State University graduate research assistant mowing tall buttercup (Ranunculus acris) during her research project to develop integrated management options. (right)
Phragmites Friday - Volunteers at the Cherokee Marsh Wisconsin State Natural Area, Native Sedge Wetland - Bundling Invasive Giant Reed Grass in Preparation for Herbicide Treatment (left) Volunteers at the Cherokee Marsh Wisconsin State Natural Area, Native Sedge Wetland - Cutting and Treating Bundled Phragmites Stems (right)
Japanese Knotweed growing along a road in Norway, Michigan before treatment by the Wild Rivers Invasive Species Coalition. Knotweed had become growing problem along this city road by impairing views and covering signs. (top left) European Marsh Thistle rosette close-up in Crandon, WI. Shortly after the photo was taken the rosette was dug up by Crandon high school students during a volunteer workday cleaning up their school forest with the Wild Rivers Invasive Species Coalition. (bottom left) Leafy spurge close-up along a roadway in Wausaukee, WI. (right)
Insectary with spotted knapweed and sign with cyphocleonus picture and partner logos (left) Cyphocleonus achates insectary constructed by Sawtooth National Forest and partners ( BLM, Wood River Land Trust, Environmental Resource Center, Blaine Co. Cooperative Weed management Area) the photo is taken before spotted knapweed was transplanted. (top right) Cyphocleonus larvae in spotted knapweed root. (bottom right)
Musk Thistle (left) Treated Canada & Bull Thistle - Cool Season exotic grasses were sprayed out in the fall with glyphosate. Native grass & forbs seeds were drilled in the spring directley into the sod. By mid June we had a carpet of thistle. Picture was taken a week after applying 5oz/ac of Aminopyralid. (right)
The blooming of Amur honeysuckle (Lonicera maackii) after a spring rain.
Lee and Mary Krueger
Basal bark treatment on autumn olive. The location is in the Town of West Bend, in Wisconsin.
Josh Wagner (submitted by Sherry Meador)
Wading through Smith River to monitor a site to be sprayed McKamey’s ranch.
Photographer (left) Elephant ear (top right) Mums (bottom right)
Diane Schuldt treats spotted knapweed and rush skeletonweed on Lower Panther Creek (Salmon-Challis National Forest).
Red Clover in autumn ash leaves.
Eggs of Galerucella calmariensis and Galerucella feeding damage on purple loosestrife. (left) Eurasian watermilfoil (Myriophyllum spicatum) living and flowering as an emersed plant on a sandbar recently exposed by receding water levels. (right)
Leafy spurge near West Butte, Sweet Grass Hills, Toole County, MT
Teasel (top left) Olympic knotweed working group (with National award) (bottom left) Bullfrog in watershield (right)
The field crew at Oahu Invasive Species Committee pause to take a quick photo while pulling devil weed (Chromolaena odorata) in a remote windward valley. (top left, Derek Ford photo) Solomon spots a miconia (Miconia calvescens) plant in the dense forests of Oahu. (bottom left, Ryan Chang photo) Alex faces off against devil weed (Chromolaena odorata) with a backpack spray full of herbicide. (right, Chris Frohlich photo)
Mark Heath / Dan Brubaker
Treating invasive jubata grass (Cortaderia jubata) on the San Mateo County Coastline – California.
Cynoglossum officinale in flower Hyoscyamus niger along Canyon Ferry Lake, MT