NOW that summer is coming in and people are spending more time in their gardens, the National Poisons Unit at Guy's Hospital, London, is worried about an increase in young children being accidentally poisoned outdoors.

The unit gets more than 700 emergency calls a year relating to plants, most of them involving children eating poisonous leaves. Toxicologists from the unit and the Royal Horticultural Society are asking garden centres to label potentially hazardous plants.