The Question and Answer section for Death of a Salesman is a great resource to ask questions, find answers, and discuss the novel.
Linda is Willy's wife. Her life revolves around her husband and sons. Her role in the play is that of the moral center.
The garden symbolizes Willy's need to provide for his family. He sees himself as a failure, both as a provider and a father. The seeds represent his desire to provide for his family: they represent the way in which he should have cared and tended...
Biff is having an identity crises. He does not want to follow in his father's footsteps. He wants to do something great with his life; he wants to do something different on his own. He laments becoming just like his father.