Syringa reticulata subsp. pekinensis Syringa reticulata subsp. pekinensis Syringa reticulata subsp. pekinensis (formerly known as "Syringa pekinensis"), also known as the Pekin lilac or the Chinese tree lilac, grows in an open, multi-stemmed form to a height of , with a spread of . They are native to northern China but grow in USDA hardiness zones 3 through 7. It is grown as an ornamental tree in Europe and North America. Pekin lilacs have arching branches and ovate dark green leaves that are long. They have yellowish-white flowers that bloom in panicles up to long. The panicles change over to loose clusters of brown
Gampaha Botanical Garden Gampaha Botanical Garden Gampaha Botanical Garden, also known as Henarathgoda Botanical Garden is situated in the suburb of Gampaha. It was established in 1876 by the British to conduct experiments on exotic economic plants such as Rubber, and explore plant wealth and development of economy in the colony. The first imported rubber tree to Sri Lanka was first planted in this garden and it was the first seedlings of Brazilian rubber tree ever planted in Asia. The garden consists of a large variety of plants and many of them are from every corner of the tropical world it is expanding