We screened plant leaf extract and biosynthesis of silver nanoparticles (AgNPs) by monitoring the conversion using electrochemistry method. In this study a simple and rapid biosynthesis of AgNPs using leaves extract of Adenium obesum have been expected. AgNPs can be prepared with lower amounts of leaf extract. The effect of leaf extract quantity and concentration of metal solution were also evaluated to optimize the biosynthesis route producing the metal nanoparticles. Stable AgNPs were formed by treating solution using the plant leaf extracts as reducing agents. The AgNPs were characterized by their average size, morphology, crystal nature, nanostructure dimensions and purity by various analytical techniques. Biosynthesized nanoparticles were characterized by various methods, such as atomic force microscopy (AFM), electrochemical impedance spectroscopy (EIS), UV鈥揤is and cyclic voltammetry (CVs). Although plant is considered as undesirable plant, but to the best of our knowledge we are the first to report its use in biosynthesizing AgNPs, which can provide a new platform to this plant making it a value added weed for nanotechnology based industries in future. This environmentally friendly method of biological AgNPs production provides rates of biosynthesis faster or comparable to those of chemical methods and can potentially be used in various human contacting areas such as cosmetics, foods, medical and antibacterial effect applications.