Assertion: black walnut's juglone | /r/HasProperty | released
Facets:
Source sentences:
text: Even after a tree is removed the soil where the roots once were will still contain juglone for several years after the tree is removed as more juglone will be released as the roots decay.
text: Juglone is released from virtually every part of the tree, although the roots, nuts, and seeds are the most toxic.