Prime Minister Lee Hsien Loong planted a tree yesterday in Ang Mo Kio Garden East to commemorate the annual Tree Planting Day, which promotes keeping the environment clean and green. Also present were other MPs of Ang Mo Kio GRC and Sengkang West, who planted trees together with residents. Some 200 shrubs were planted by children. At the event, residents also learnt how to make terrariums, and were treated to drumming and Chinese orchestra performances.