Yes, all of those are pre-emergent herbicides that won't harm established amaryllis when used as directed. (There are extra precautions on the label when using around certain geophytes like Gladiolus). As pre-emergent herbicides, they only prevent new weeds from germinating, but won't kill established weeds. Cheers, Erick On Fri, Jan 31, 2020 at 12:58 AM D. K. <drkuonen@hotmail.com> wrote: > Re: WHY OH WHY does anyone use herbicides.... > > Mike; I will stop using herbicides on the weeds in my hippeastrum patch if > you will come over and weed out the burmuda grass and nut sedge!!!! My > observation is that they are very resistant to RoundUp. Erick: are you > saying Snapshot, Amaze and Surflan are ok to use on Amaryllids? > Don Kuonen (drkuonen@hotmail.com) Arkansas > _______________________________________________ > pbs mailing list > pbs@lists.pacificbulbsociety.net > http://lists.pacificbulbsociety.net/cgi-bin/… > _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/…