Amaryllis belladonna phytotoxicity?

Robert Lauf
Tue, 24 Mar 2020 11:37:25 PDT
 A search of Google scholar turned up a number of references.  The attached paper might be informative at least as a starting point, but bear in mind their interest was using extracts or ground up biomass as a pre-emergent herbicide to suppress germination of weeds.
Bob LaufOak Ridge, TN
    On Tuesday, March 24, 2020, 02:20:35 PM EDT, Jane McGary <> wrote:  
 An inquiry has come via the PBS website asking whether Amaryllis 
belladonna has some property that prevents other plants from growing 
near it. Does anyone know about this? Or are his Amaryllis so congested 
that the shallow-growing bulbs are just blocking anything else from growing?


Jane McGary

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