This study was conducted to assess rocket leaves activity to control R. solani on cucumber. Three levels 2.5, 5 and 10 g/1 kg soil of rocket leaves were tested. Results showed rocket leaves decreased disease percent significantly compared to R. solani control treatment. The 10 g rocket leaves treatment was the most efficient when minimized disease percent up to zero % followed by 5 g/ 1kg and 2, 5 g treatment with 5% and 10% respectively. Whereas, R. solani control treatment control was 45%. Results revealed that all leaf treatments increased the growth of cucumber plants including plant height, leaf area, dry and wet weights, compared to the R. solani control treatment. Whilst, results showed significant differences in biological indicators of leaf treatments ranged between 2710-3075 compared to 1196 for R. solani control treatment.