Ethno botanist James Wong believes plants have more uses than just brightening up a garden border. They contain beneficial properties which could help ease the symptoms of everyday aches and pains. In this episode James focuses on trees. His recipes for natural tree remedies includes a soothing gel for varicose veins made from conkers, a fragrant cologne made from pine, a lotion to tackle head lice and a traditional tea which could help improve memory function. It's a fascinating mix of gardening, science and history and the volunteers who try James's remedies find out if they help them.