I have recently ordered seeds from a reliable nursery for Dolichos lablab. There was no mention of the plants being poisonous on their website or in their catalogue but on receipt the packets have POISON stamped on them twice. I have returned the seeds to them and await their response but I have now looked at various other nursery websites for these seeds and although many stock them there is no mention of them being poisonous. Some types are eaten in Africa but only after very careful cooking/washing etc. In the body they create hydrogen cyanide so with my visiting grandsons, dogs etc I just do not want to take any risks. I assume it is DEFRA who will oversee seed labelling but I am concerned about the rules etc regarding seed packaging and how they are monitored.