LONDON - PRINCE Charles, an avid gardener and environmentalist, has received Britain's top gardening award from his mother, Queen Elizabeth II.

The Victoria Medal of Honour is the highest accolade the Royal Horticultural Society bestows. Only 63 horticulturists can hold it at any time - a tribute to the 63 years of Queen Victoria's reign.

The society said the heir to throne was given the medal Monday in recognition of his 'passion for plants, sustainable gardening and the environment.'

Prince Charles is particularly well known for his commitment to green issues and his enthusiasm for organic foods. His Duchy Originals line is one of Britain's leading brands of organic food and drink.

Prince Charles was given the award at the opening of the Chelsea Flower Show in London. -- AP