Application of copper oxychloride solution to the bark of an ornamental tree Osmanthus Fragrans (Olea Fragrans, Fragrant Olive) in Italy. This is a chemical used to control a wide range of fungal and bacterial diseases on fruit, vegetables and ornamental plants. There are regulatory, environmental, health and safety constraints on the horticultural and agricultural use of copper compounds which have led to the withdrawal of several products in some European countries.