The unique properties of AgNPs are ubiquitously used in growing number of applications such as in renewable energy, electronics, waste water treatment, medicine, clinical equipment and biosensors. However, the use of AgNPs in such a wide spectrum of applications make it susceptible to be released into the environment, which may adversely affect human health and rise environmental concerns. The article focuses on the properties, the potential risk to organisms and bottom-up methods to synthesis silver nanoparticles. Besides the efforts to understand the hazards and environmental concerns related to the AgNPs, the information available is still limited with results that are uncertain or even controversial, hence explanatory research is needed. Once released in the environment AgNPs due to their large surface are and high surface energy could undergo oxidation, aggregation, chlorination and sulfurization that may cause detrimental effects on the environment. Hence, environmental transformation related to AgNPs toxicity should be studied and investigated. The lack of study related to the mechanism of toxicity of AgNPs, leads to poor understanding of the cause of toxicity i.e., if the toxicity is caused by silver nanoparticles or silver ions. Therefore, efforts should be made to discern this question so that the toxicity can be controlled or reduced. The conventional synthesis methods such as chemical synthesis often involves the use of hazardous chemicals such as Hydrazine, DMF and NaBH4 that may cause lethal effects on humans. As an alternative to chemical method green synthesis is used as the reagents used in the green synthesis are natural compounds such as polyphenols, flavonoids, alkaloids and functional groups such as hydroxy, carboxylic and amide groups which acts as strong reducing and capping agents. However, these methods may be time consuming. Green synthesis methods such as plant virus biotemplate mediated synthesis are less studied and better understanding is needed as viral template methods such as TMV-biotemplate synthesis is can used to synthesis 1D silver nanostructures.