What does the acronym RHS stand for?

The acronym RHS stands for the Royal Horticultural Society. This organization is renowned for its dedication to promoting gardening and horticulture across the UK and beyond. Established in 1804, the RHS aims to inspire passion for plants and gardens through various initiatives, including the organization of flower shows, educational programs, and providing resources for gardeners.

The other options, while they include the word "Royal," refer to organizations or concepts that are not widely recognized or aligned with the focus of horticulture that the RHS embodies. The Royal Horticultural Society’s activities and resources help cultivate knowledge about plant care, gardening techniques, and environmental stewardship, reinforcing its status as a leading authority in the field of horticulture.