I'm doing a science experiment in which I expose a plant to different concentrations of Windex and I want to see how it affects the plant's pigmentation, growth, and flower production. And I live in California. I would approximately have about 1 1/2 months to do the experiment. Thanks!

I'd suggest cucmbers-- they are fast growing and very responsive to chemical influences. They are often used for indicator plants in herbicide and insecticide tests.