Assertion: black walnut's chemical | /r/HasProperty | harmful
Facets:
value: to plants
type: TRANSITIVE-OBJECT
Source sentences:
text: As Diane mentioned, gardening under a black walnut tree can be tricky, because it releases a chemical called juglone from its roots that can be harmful to other plants.
text: Another issue to think about is that certain trees produce chemicals that can be harmful to plants.