Constables and staff planted 800 saplings on the premises of Telangana State Special Police 7th Battalion at Dichpally on Sunday. The battalion commandant N.V. Sambaiah, assistant commandants P. Venkatramulu and K.V. Ramana, RIs Sanjeeva Reddy and Ramakrishna and battalion J.A. Obul Reddy were among those who participated in the programme.