Plants
The poem is called "A Poison Tree," so, naturally, vegetation plays an important role. Indeed, the speaker's anger grows until it eventually produces a poisonous apple that, presumably, kills his "...
Night and Day
The speaker is adamant about telling us what time of day it is. He waters his anger both at night and in the morning. He gives it sunshine (in the daytime). It grows "both day and night." The "foe"...
Liquid Imagery
The speaker talks about cultivating anger as if it were a plant. So, naturally he must "water" it. Only, he doesn't water it with water, but rather with his tears. Sadness, anger, and other negativ...
The Enemy
Blake's poem is about being angry with an enemy and getting even with him. The speaker does a lot of things to make his "foe" really seem like an enemy. For example, he tells how he (the "foe") "st...