The American Horticultural Society (AHS) is one of the most respected, longstanding national gardening organizations in the US. Since 1922, they have been a trusted source of high quality gardening and horticultural information. nToday, their mission blends education, social responsibility, and environmental stewardship with the art and practice of horticulture. Their vision is a land of sustainable gardens, cultivated by a diverse population with a common passion for plants.n