Gamma Rays response #2 - Marigolds again? Why?

It is due before class starts on Monday, Dec. 15
In The Effect of Gamma Rays on Man-in-the-Moon Marigolds, Tillie conducts an unusual science project. She subjects three different batches of marigolds to the potentially damaging effects of gamma rays - a topic we addressed in a previous blog post. But why did the play's author, Paul Zindel, choose marigolds as the flower to use in the science experiment? Click on the following links and please read the information on marigolds at wikipedia and this information on growing marigolds.
Do not concern yourself with the all the Latin terms or varieties, but focus on the specific characteristics of the flower... Then post your ideas about the use of marigolds as a symbol in the story. What makes marigolds unique? What do they need to survive? When do marigolds bloom? How might the characteristics or qualities of this particular flower be a symbol that connects to important ideas in the play? Why might have Zindel used marigolds as the flower?