In article ,
Sally Holmes wrote:
Sacha wrote:

Now I think of it, don't the police have a list of plants designed to
deter intruders or did I dream this?

I think berberis must come high up the list. The thorns are incredibly
sharp, they break off in your flesh and fester, and they last for years in
the soil.

Berberis vary between being as you describe, and less thorny than
gorse. It depends on the species.


Regards,
Nick Maclaren.