I've always wondered if sweetening up the soil pH with lime would make
Horsetail (Equisetum) feel unwelcome. I haven't tried it yet, but intend
to give it a shot.


Good luck - I've got a mini forest of it just below an old limestone
quarry.

Ah, geeze. Thanks for saving me from that particular experiment : )


Maybe you could become a Horsetail supplier to the herbal trade?