Ventenata (Ventenata dubia) is one of the most recent troublesome invasive plant species to affect range, pasture, and wild lands of the Intermountain Pacific Northwest and Northern Great Plains of […]

Introduced plant pathogens threaten North American forests. Some arrived in the distant past: chestnut blight, white pine blister rust, beech bark disease, Dutch elm disease, butternut canker. Damaging introductions continue […]