A Poison Tree

A Poison Tree

I was angry with my friend:

I told my wrath, my wrath did end.
I was angry with my foe:
I told it not, my wrath did grow.

And I watered it in fears,
Night and morning with my tears;
And I sunned it with smiles,
And with soft deceitful wiles.

And it grew both day and night,
Till it bore an apple bright.
And my foe beheld it shine.
And he knew that it was mine,

And into my garden stole
When the night had veiled the pole;
In the morning glad I see
My foe outstretched beneath the tree.

                                                -by William Blake
 
The first stanza is explaining how when Blake is angry with his friends he tells them of his anger and it is resolved but when he has frustration towards an enemy it only grows larger because he does not tell them of his anger.
 
The second stanza goes on explaining how he treats the anger for his foe. It reminds me of a plant. He waters it with tears instead of water. And he suns it with smiles instead of, well, the sun.
 
He cared for his anger so well that it grew evidence. His foe found this evidence (the apple) and knew the meaning behind it.
 
At night he went to the tree(anger) and tried to discover the meaning (apple) but it ended up killing him?
The ending confuses me terribly but the moral to this poem is to tell people when you have problems with them.
 
I didn't like this poem. The imagery was really nice but it made me think cliche.