Before this ugly edifice, and between it and the wheel-track of the street, was a grass-plot, much overgrown with burdock, pig-weed, apple-peru, and such unsightly vegetation, which evidently found something congenial in the soil that had so early borne the black flower of civilized society, a prison.

which best describes the effect of the words “ugly,” “overgrown,” “pig-weed,” and “unsightly vegetation”?