A survey of weed flora of rice crop fields was done during 2011-2015 at the peak point of weed growth around Bilaspur selecting Sakari, Domuhani and Birkona as study sites. Data was analyzed floristically and it was found that weed flora of rice field was distributed in 50 species of seed plants belonging to 13 dicoct and 03 monocot families. One Pteridophyte was also reported. Dicoct/Monocot ratio was 4.33:1 for rice weed flora. Seasonal variations in various phenological events of these weeds were also observed and expressed in terms of phenograms.