In the 20th century, the Seethawaka Botanical Garden, a plantation for rubber and tea at that time, was sold by the Land Reform Commission to Pannaagula.
But most of the land area was abandoned on that time, which was taken over by the Land Reform Commission. The garden was established in 20th century as a plantation for Rubber and Tea, which was owned by a garden known as "Pannaagula". 
