The Royal Horticultural Society (RHS) is a well-known gardening society that promotes excellence in gardening. Formerly the Horticultural Society of London, the Society has a history of over 200 years. The RHS Qualifications is a body that awards accredited programs for gardeners and horticulturists. The Royal Horticultural Society offers various horticulture courses at levels one to three, and at master’s level in practical horticulture, plant growth, and garden planning. Centres that hold examinations for these qualifications must acquire approval from the Society to conduct them.