1. This study is a study of Sub-district administrative organization in the area of the outbreak of Mimosa pigra only. Therefore, in this study, it should be studied further to metrics resulting from the application of PEST model for managing other types of exotic plants such as Chromolaena odorata, Eichhornia crassipes, Imperata cylindrical, Lantana camara, Mikania micrantha, etc which to guide the invasive alien plants management that fit much better.