Plants face various abiotic stresses such as drought and salinity during growing stages adversely affect their physiological and biological processes. The use of bioactive compounds could mitigate the detri- mental effects of abiotic stresses. The experimental layout was a split split-plot system based on a ran- domized complete block design with three replications. The treatments included three levels of potassium silicate (0, 3, and 6 cm L-1 or 0, 12, and 24 l-1 of K2SiO3 ha—1) combined with three levels of Aloe saponaria L. extract (Ae) 0, 0.5, and 1% under two levels of irrigation regimes (IR70 and IR100; rep- resenting irrigation at 70 and 100% of crop evapotranspiration). The obtained results revealed that control roselle plants were adversely affected by drought, which recorded the lowest growth and yield parame- ters. Meanwhile, the exogenous addition of Ae and KSi significantly improved the growth and yield of def- icit and full irrigated roselle plants. The foliar application of Ae (1%) and KSi (3 or 6 cm L-1) under full irrigation led to a significant increase in growth and yield parameters of roselle. In addition, considerable enhancements in yield quality of roselle plants under deficit irrigation were recorded.