Here is a stylistic analysis of the poem A Poison Tree by William Blake: Rhyme Scheme: The poem is written in quatrains with an AABB rhyme scheme. This regularity creates a singing effect which contrasts with the dark and violent content of the poem. Metaphors: The use of metaphors. Related: How to use metaphors is everywhere. The moral lessons of A Poison Tree include the need to be wary of the motives of others and the ability of others to manipulate the innocent. Additionally, the reader should recognize the evil. William Blake's allegorical poem, A Poison Tree, deals with the theme of anger. The speaker of the poem reveals to his friend that he is angry and the anger dissipates. But when the. A Poison Tree was discussed because it was the only poem we all knew in which the effects of not saying how one feels or not responding to anger can cause self-destructive anger and, as in the poem, death or murder, as some have suggested. Candor and honesty are a tone you can count on from Blake. It is interesting to note that the original. The poem A Poison Tree from William Blake's Songs of Experience is a poem about anger, revenge, and ultimately death. The measured, rational tone of the poem belies the latent rage.