I'm not familiar with this poem, but this essay may help you.
http://grace345.wordpress.com/2012/11/19/poetry-writing/
Describe the setting of “Grape Sherbet” as you visualize it.
A graveyard with a family?
Also, is the father dead or alive. I know this is happening on Memorial Day, but it doesn't seem clear whether the father is dead.
2 answers
describe the setting of grape sherbet as you visualize