Abstract: This paper examines ways of meaning-attribution of plants by interpreting plenty of ancient documents in perspectives of cultural studies. It concludes that the main three ways of meaning-attribution of plants are image analogy between plants and virtuous men, advocacy from cultural liberties, and intertextuality of cultural traditions. It claims that meaning-attribution of plants seems reasonable and self- closured in many cases, and also somewhat casual and arbitrary. Plant's cultural meaning is extended and underlined constantly.