What is a good plant to do a science experiment with?

I'm doing a science fair experiment that involves plants. I need a plant that will grow to be no more than 5-10 inches tall with in one month of germination, is not a philodrendon plant, is a plant that I can acquire seeds of the plant, and germination period of the seeds is less than 2 weeks. If you have any idea of that sort of plant or a plant that you have successfully conducted a science fair experiment on then please help me by answering my question!

What is a good plant to do a science experiment with?
Some kind of brassica; a mustard or a cress. These seeds should be easy to find.
Reply:Radishes are often used because of their quick germination and growth.
Reply:Brassica. But peas worked for Mendel.
Reply:I think pea or bean plants would work well.
Reply:As curious orange suggested mustard may be your best bet. Weeds like clover seem to have a complete cycle in less than a month. They play havoc with my lawn.

barber