Present study deals with certain ecological attributes of crofton weed (Eupatorium adenophorum Spreng), an abnoxius invasive weed invading the road-side forests mixed with oaks and conifer. The average density of E. adenophorum shared 22.4 - 65.8% of total herb density which was almost higher in forest below the roadside. The biomass of E. adenophorum accounted for 84.0 - 99.8% of total herbaceous biomass in different forest sites. Study reveals the dominated impact of this species, which altered the composition, diversity and growth of herbs in forests, and also can change the habitat and disturb the ecology of native plants in the region. Therefore, needs of was felt to sustain the habitat of native species.