Author: Government Information and Library Services

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