It is legal for a person over the age of 21 to possess not more than 28.5 grams of marijuana. Although in some respects California drug law has been relaxed with respect to marijuana, you may still end up facing drug charges if you grow too many plants or have more than half a pound of processed marijuana in your possession, unless you can prove this is medically necessary. You can also face drug charges for crimes like driving while under the influence of marijuana or smoking too close to a school zone even if you have a prescription.
