Two on-farm trials (OFTs) were established in 2009 at Mendipather, North Garo Hills, Meghalaya. The trials were initiated to study the performance of certain selected clones of Hevea brasiliensis in farmers’ fields and the clones were planted in the fields of two progressive farmers at Mendipather. Six clones viz., RRIM 600, PB 235, RRII 203, RRII 417, RRII 422 and RRII 429 were planted in blocks. Data on girth and other secondary characters recorded during the initial years have been analysed in the present study. The highest girth was recorded in RRII 429 followed by RRII 417 whereas the lowest girth was recorded in RRII 422 in Field 1. In Field 2, maximum girth was recorded in PB 235 followed by RRII 203 and minimum was in RRII 422. Maximum bark thickness was recorded in PB 235 closely followed by RRII 429 whereas the lowest bark thickness was recorded in RRII 422. Performance of the clones based on absolute girth suggests the superiority of PB 235 and RRII 429 over RRIM 600 in the local agro-climatic conditions of North Garo Hills.