The effect of aqueous sodium cyanide has been studied on germination ofC. ternatea andR. minima seeds. The suitable concentration of this chemical accelerates imbibition, germination, and promotes the early growth of the seedlings. The best result is obtained by soaking the seeds for 24 hours in a solution of 100 ppm of sodium cyanide. As concentrations are increased the inhibitory effect becames more and more pronounced leading to the eventual suppression of normal germination and growth of the seeds. The mean germination time of the seeds, treated with effective and critical concentrations of the chemical, is decreased. Light and temperature conditions do not influence the chemical effect on the seeds.