A posion tree

After completing the Posion Tree I realized the writter was trying to potray what happenes when hattride grows deep with in us and how it can creats the want for revenge which is considered to be posion because it is unfair and has no-limits. Also in the last satment "In the morning, glad, I see My foe outstretched beneath the tree" he possibly meant his foe has suffered from his plan of revenge.