Spring showers bring hemlock flowers to Rogue Valley (Mail Tribune, 6/28/2022)
Poison hemlock (Conium maculafum) (2015) Oregon Department of Agriculture
noxious weeds
Fighting welted thistle noxious weeds
Farmer named ‘Weed Warrior’ for welted thistle fight (Wallowa County Chieftain, 1/5/22)
Pest risk assessment for welted thistle, Carduus crispus L (2017) Oregon State Department of Agriculture
Noxious weed eradication grants
Noxious weed warriors: Sign up for grant money now (Oregon Capital Chronicle, 10/25/2021)
Noxious weed policy and classification system (serial) Oregon Department of Agriculture
Noxious Weed Program annual report (annual) Noxious Weed Program annual report
Poisonous hemlock plants
It’s all over the place here’: Wild hemlock plants are common in Oregon — and deadly (Oregonian, 6/29/21)
Poison hemlock (Conium maculafum) (2015) Oregon Department of Agriculture
Controlling weeds in SE Oregon
Weeds flourish in dry soils of southern Idaho, SE Oregon (Capital Press, 6/4/21)
Noxious Weed Program annual report (annual) Oregon Invasive Noxious Weed Control Program
Invasive pampas grass
After removal effort, South Slough asks for public’s help with invasive grass (The World, 3/21/2021)
Jubata grass (Cortaderia jubata) (2015) Oregon Department of Agriculture, Noxious Weed Control Program
Cheatgrass and medusahead
A War On Weeds (Baker City Herald, 10/24/20)
Medusahead rye (Taeniatherum canput-medusae) [PDF] (2015) Oregon Department of Agriculture
Noxious weed program funding
ODA’s noxious weed control funding pulled (Capital Press, 9/3/20)
Annual report (serial) Oregon Noxious Weed Control Program
Toxic giant hogweed
Toxic giant hogweed sap that burns, blisters skin found in Clark County (Oregonian, 7/13/2019)
Giant hogweed, heracleum mantegazzianum: toxic plant alert! (2008) Oregon Department of Agriculture, Noxious Weed Control Program
Plant pest risk assessment for giant hogweed, Heracleum mantegazzianum (2013) Oregon Department of Agriculture
Giant hogweed comparison and identification (2014) Oregon Department of Agriculture, Noxious Weed Control Program
Noxious weeds
A weedy scourge: 20 invasive plant species that cost Oregon millions (Oregonian, 1/29/19)
Economic impact from selected noxious weeds in Oregon [PDF] (2014) Oregon Noxious Weed Program
Noxious weed program annual report (annual) Oregon Noxious Weed Program
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