Hoary cress infestation at Crowheart, WyomingLike many countries, the USA suffers from the detrimental impacts of invasive weeds which can threaten livestock, crops, native species and sectors including agriculture and tourism. In many of America’s Western states, invasive weeds such as houndstongue (Cynoglossum officinale), Russian knapweed (Rhaponticum repens), yellow and Dalmatian toadflax (Linaria vulgaris and Linaria dalmatica), oxeye daisy (Leucanthemum vulgare), and hoary cress (Lepidium draba) are serious problems.…

Invasive weeds in America’s Western states: restoring balance using biological control — The Invasives Blog