Hi there! "Under Prop. 64, everyone can grow 6 plants at their residence (the limit is per residence, not per person). Local may ban outdoor cultivation, and "reasonably regulate" indoor cultivation, which must be in a residence or secure location. Medical patients can still grow whatever they need, provided local zoning regulations permit it." You can read more here (Question #10): http://www.canorml.org/faq.html
Be sure to check that your city/county does not have a ban on growing, in which case, you're not allowed to grow any.
I hope that helps!