RHS stands for the Royal Horticultural Society, a UK-based charity dedicated to promoting gardening and horticulture. Founded in 1804, it aims to inspire and educate people about plants and gardening practices. The RHS organizes events, such as flower shows, and provides resources for gardeners of all skill levels. The society also conducts research and offers advice on plant care, pest management, and sustainable gardening. Through its gardens, such as Wisley and Harlow Carr, the RHS showcases a wide variety of plants and gardening techniques, serving as a valuable resource for both amateur and professional gardeners.