Where can I find comfrey that sets seeds invasively?

Yoris Peach Posts: 586	Where can I find comfrey that sets seeds invasively? Jul 11, 2018 15:18:07 GMT -7 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Yoris on Jul 11, 2018 15:18:07 GMT -7 I heard somewhere that comfrey exists wherein it spreads by seed invasively. What species of comfrey is it, and where can I get it?
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