On 18 Aug, 23:48, "shazzbat"
wrote:
Since it's apparently been around since the dinosaurs were top species, I
would suggest that eradicating it is at best an aspiration.

Morning Steve! As Jenny's link from Graham Paul (chemical specialist)
says ... " I now take the philosophical view that if evolution can't
change the Horsetail in 30 million years, I must learn to live with
it". My thoughts entirely. On visiting the lotty yesterday, I've found
a profusion of them in an area. I kept a circle of it and weeded
around it. Looked so lovely that a neighbour asked me what it was not
realising what he was seeing ;o)