Sign beside colony of ransoms or wild garlic, Allium ursinum, in Tower Hamlets Cemetery Park, London, 15 May 2021.  A similar sign was placed beside an extensive colony of three-cornered garlic, A. triquetrum. As this species is seriously invasive, perhaps it would be better to encourage people to forage it, but presumably the authorities think that would confuse people.

Edited 26 September 2021.