Abstract: A survey was conducted to determine the severity of disease caused by Pseudomonas syringae pv. lachrymans on greenhouse raised cucumber plant (Cucumis sativus). In this survey, isolations were made from the samples which displays typical symptoms of the disease and six isolates of P. syringae pv. lachrymans were found. Pathogenicity, tobacco hypersensitivity and biochemical tests were applied to these isolates to recognise the disease.