Again, what is “a hemlock tree”? Why doesn’t the poet write about a more ‘beautiful’ tree such as a maple, or an oak, or a pine?

The poet has also written about a hemlock tree, which is a toxic tree. He has not written about any beautiful tree such as a maple, or oak, or pine because these trees are a symbol of splendour and happiness. Frost wanted to represent the belief of sorrow and feeling apologetic, which is why he has used a hemlock tree.

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