sakigake te haru o tsugeru ya fukujuso
the herald of spring
Far East Amur adonis
betsumei wa yuki no hana nari fukujuso
snow flower ―
According to the Korean Movie & Drama Database HANCINEMA, Far East Amur adonis is written as 福寿草 (fukujuso） in Chinese characters, which means the plant of luck and longevity.
Please check out the following blog, and you will know about this plant better.
― Hidenori Hiruta