William Blake in “The Sick Rose” gives an apostrophe to a rose personifying it as sick, being eaten alive by an invisible worm. The literal meaning of the poem could be that a budworm, a type of moth larva that devours its way inside a rosebud through the petals and ovaries, is insidiously destroying the pure new rose’s life before it can bloom. Moreover, both the nature of the budworm and a worm’s symbolic association with corruption, depravity, death and a slow, creeping doom match with well with Blake’s worm whose “dark secret love/ Does thy life destroy.” However, the poet takes the traditional symbolic meanings of a rose such as love, the heart, passion, spring and life, and ironically distorts these meanings on the front end when he refers to the rose as sick in both the title and the first line.
Therefore, the heart or love, which is symbolically tied to the rose, is being haunted and polluted all the sudden by an “invisible worm,” or an unseen, unrecognized force that unexpectedly “flies in the night” under the cover of darkness. Thus, I could deduce an allegory concerning a toxic relationship with an undeserving, shady person, either real or in the speaker’s head, who subversively infiltrated the heart of someone, emotionally and possibly sexually. This worm exposed, “found out,” and exploited the innocent heart when it is most vulnerable or in “thy bed.” The heart, in the midst of an emotional “howling storm” or turmoil, could not equip itself to fight this underhand invasion. The speaker claims that his unaware, naive heart cannot survive this lustful, consuming, hidden love that the parasite offers.