Assertion: himalayan balsam | /r/CapableOf | grow in impenetrable thickets
Facets:
value: almost
type: DEGREE
Source sentences:
text: Himalayan balsam grows in almost impenetrable thickets and will bully out any other species; its plentiful nectar means that bumble bees pollinate it rather than native species, and, being an annual, it dies down, leaving riverbanks bare in winter.