Decorative Plants and Herbal Garden was built up to meet the order of King Rama III at the same time of the great edition of medical science. After the edition, the medical text inscriptions were posted in Sala Rai. Many kinds of perennial grown in Khao Mor (Model Hill) were herbs and plants both in literature and from the Buddha's biography such as myrobalan, jambolan, margosa, Bodhi tree, and banyan tree. There are also flowering plants and green-leaf plants. Dwarfed trees from persimmon and uricaceae plants grown in many basins in this monastery are very well maintained as observed by the outer coverings and dark rough branches which show their growth in many years ago since the reign of King Rama I and III. Looking at these many Thai-style dwarfed trees, you will get an amazing pleasure.