Describe symbolism in somewhere i have never travelled, gladly beyond by E. E. Cummings

Cummings relies mainly on universal symbols in his poem, in somewhere i have never travelled, gladly beyond, which add a second meaning, to the poem. The rose, commonly associated with love and romance, symbolizes the speaker's blooming love. The flower symbolism, however, runs deeper than that, as budding flowers are also a common symbol used to signify sexual love.