One of the most impressive areas is the collection of houseplants with over 750 species, which are characterized by their unusual leaf shapes and diverse color nuances. However, the main attraction of the garden is the decorative orchids, of which there are around 100 species. The garden is also known for its collection of 175 palm species, which not only adorn the landscape but also serve people with food, clothing, shelter, and fuel.
In the garden, there is also an avenue of memorial trees planted by heads of state and prominent figures who have visited Sri Lanka. The first memorial tree was planted by King Edward VII, a Bodhi tree. The second tree, a Ceylon ironwood tree, which is considered the national symbol of Sri Lanka, was planted in 1891 by the Russian Tsar Nicholas II. There is also a tree planted by cosmonaut Yuri Gagarin. Many trees with unusual fruits and extraordinary flowers grow in the garden, attracting great interest from tourists. An integral part of the garden are also the fruit bats, which hang in large groups from the trees, as well as numerous playful monkeys.