Arboretum is defined as living collections of trees and other woody plants. The area of the arboretum is 1.58 ha. which was established during the year 1992 and maintained by Department of Horticulture with Hill Area Development Programme funds and it is situated near the lake, Udhagai. It was established with an aim of conserving native and indigenous trees. The micro watershed area leading to ooty lake was neglected and the feeder line feeding water to Ooty was contaminated with urban waste and agricultural chemicals. The area is the natural habitats of both indigenous and migratory birds. to conserve flora and fauna of the Nilgiri, the area was developed into the Arboretum. During the year 2005-2006, it was rehabilitated by the funds provided by the Hill Area Development Programme to the tune of 12.50 lakhs by providing permanent fencing, food path and other infrastructure facilities. Various indigenous and exotic tree species of are grown in arboretum and conserved. About 80 trees have been planted in the arboretum.The different type of tree species planted in arboretum are Alnus nepalensis, Calistemon lanceolatus, Cupressus macrocarpa, Eugenia apiculata, Hypericum hookerianum, Podocarpus elongata, Populus deltoids, Quercus macrocarpa Salix babylonica, Taxodium mucronatum, Prunus pissardii etc.
