Answer:
"A Poison Tree" relates to Hamlet because it shows the struggle to actually follow through with revenge until the time seems right. This is very evident if you take a close look at the lines; “And I watered it in fears” and “And it grew both day and night” those lines are pretty much the whole Hamlet play. I believe this because Hamlet kept procrastinating and not following through with his revenge, and it only made the revenge and anger build stronger. That was what the play Hamlet was about, it was about the build of revenge and that is exactly what this poem is about too.
hope this helps!
