An attempted was made for the green synthesis of silver nanoparticles using commonly available plants viz., Tridax procumbans, Euphorbia hirta and Azardiract aindica. The plants yielding silver nanoparticles successfully were characterized and compared. It is concluded that the plant source of T. procumbans is most preferable for the synthesis of nanoparticles having smallest particle size with spherical shape, crystalline nature, stable silver elemental composition etc.