a solution of vinnegar is supposed to work, so is potassium pemanganate solution, and I think so is a solution of iron sulfate. I have never tried any of these methods, and I use grit or gravel on my seeds. Peter (UK) On 1 January 2015 at 08:28, Seaton Ager <m.ager@xtra.co.nz> wrote: > Hi I used vermiculite on top of my seed pots for the first time this > year,but have had terrible trouble with liverwort, has anyone got any good > ways of killing the liverwort but not the seeds still to come up. >