Assertion: klammath weed | /r/HasProperty | listed as noxious weed
Facets:
value: in more than twenty countries
type: LOCATION
Source sentences:
text: Although Hypericum perforatum is grown commercially in some regions of south east Europe, it is listed as a noxious weed in more than twenty countries and has introduced populations in South and North America, India, New Zealand, Australia, and South Africa.