The ongoing development of digital humanities technology presents novel ideas and methodologies for interpreting landscape poems. The study focuses on 356 poems concerning Hemerocallis fulva as its research object. It employs a combination of clear positioning method, the approximate substitution method, and the spatio-temporal speculative positioning method to analyze and visualize the spatial information pertaining to Hemerocallis fulva poems, which includes the places of creation, places of description, and associations with the poets, Furthermore, it delineates the spatio-temporal distribution law of this information. The historical planting range of Hemerocallis fulva closely aligns with its ecological distribution area in contemporary times. The study not only aids in elucidating the cultural perceptions of Hemerocallis fulva during ancient periods from an environmental history standpoint but also offers fresh research angles for a more profonund comprhension of the historical climatic conditions conducive to the growth of Hemerocallis fulva.