What are some inexpensive plant hormones and where can I find information on them?

I'm doing an experiment in science related to the effect of hormones on plant growth. I need to know some inexpensive hormones and where i can find online information on them. Thanks!What are some inexpensive plant hormones and where can I find information on them?Do a google search for "auxins". Also, willow twigs produce plant "growth hormones" if placed in a jar of water. The water can then be used to stimulate other plant cuttings to grow roots.