Assertion: aspen | /r/HasProperty | difficult
Facets:
value: generally
type: DEGREE
Source sentences:
text: However, aspens do not thrive very well in the shade, and it is difficult for aspen seedlings to grow in an already mature aspen stand.
text: However, it adds that aspen are generally difficult to grow in the urban landscape because the soils they like are rare and because of their susceptibility to disease and insects.