All the roses of the garden, I plucked and crushed them in the dust; I made a thorny bed, and upon it, there I lie.

This couplet speaks of self-inflicted sorrow. The speaker describes how they themselves plucked all the beautiful flowers from the garden, crushing them into dust. Then, they reveal that they fashioned a bed of thorns and are now the one lying on it. It's a poignant confession of personal responsibility for one's own misery. The garden's beauty was destroyed by their own hands, leading to a painful existence they created. It highlights the consequence of destructive actions and the deep regret of experiencing the very pain one has caused.