Encompassing approximately 120 acres of the 207-acre grounds, the botanical gardens contain more than a dozen thematic areas, including the Desert Garden, Japanese Garden, and a Chinese garden called Liu Fang Yuan, the Garden of Flowing Fragrance. A Botanical Center features classrooms, research labs, greenhouses, and The Rose Hills Foundation Conservatory for Botanical Science. Featured subjects of conferences, lectures, and workshops include succulents, roses, the history of gardens, and botanical research. The Huntington also sponsors an annual Chinese Garden Lecture Series.