Dr. Inas Sabah Mohammad Shareif and Prof.Dr. Sahar A.A. Malik Al-saadi published a paper entitled Allelopathic effect of Nerium oleander L. alcohol extract on growth and development of Arabidopsis thaliana (L.) Heynh. in the Caspian Journal of Environmental Sciences, which is indexed in Scopus Q3 database ISSN 1735-3033. the study aims to identify the Allelopathic effect of alcoholic extracts of oleander flowers on morphological, biochemical, anatomical of A. thaliana .The study concluded that the low concentrations of the extract stimulated some morphological measurements, and the high concentrations were discouraging .