...rich tradition for the treatment of these infectious diseases (Titilope et al., 2012), both infectious and non-infectious. Attah et al. (2012) makes similar claims with the evaluation and development of compounds from similar claims with the evaluation and development of compounds from medicinal plants for the treatment of diseases which is one of the areas that is gaining grounds and acceptability world-wide (p.1). According to the World Health Organization, medicinal plants would be the best source to acquire different effective drugs and, therefore, those plants should undergo investigation to have a better understanding of their properties, safety and efficacy (Rajeh et al., 2010; Nascimiento et al., 2000). There are some published reports describing the antimicrobial activity of various crude plant extracts (Igoli et al., 2005; Alzoreky et al., 2003). It is estimated that there are about 2.5 million species of higher plants and the majority of these have not yet been examined for their pharmacological activities (Ram et al., 2003). In relation with the applications of herbal plants, weed, which is a plant that grows out of place and is competitive, persistent and pernicious (James et al., 1991), have been a part of civilization and many ancient documents speak of humans battling weeds in the crops they grow and also found to be resistant to most of the microbial disease that made us interested to know the potency behind (Ibrahim et al., 2012). Furthermore, according to...
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