Cal. Health & Safety Code § 11362.1

(a) Subject to Sections 11362.2, 11362.3, 11362.4, and 11362.45, but notwithstanding any other provision of law, it shall be lawful under state and local law, and shall not be a violation of state or local law, for persons 21 years of age or older to:
1. (1) Possess, process, transport, purchase, obtain, or give away to persons 21 years of age or older without any compensation whatsoever, not more than 28.5 grams of cannabis not in the form of concentrated cannabis;
2. (2) Possess, process, transport, purchase, obtain, or give away to persons 21 years of age or older without any compensation whatsoever, not more than eight grams of cannabis in the form of concentrated cannabis, including as contained in cannabis products;
3. (3) Possess, plant, cultivate, harvest, dry, or process not more than six living cannabis plants and possess the cannabis produced by the plants;
4. (4) Smoke or ingest cannabis or cannabis products; and
5. (5) Possess, transport, purchase, obtain, use, manufacture, or give away cannabis accessories to persons 21 years of age or older without any compensation whatsoever.
(b) Paragraph (5) of subdivision (a) is intended to meet the requirements of subsection (f) of Section 863 of Title 21 of the United States Code (21 U.S.C. Sec. 863(f)) by authorizing, under state law, any person in compliance with this section to manufacture, possess, or distribute cannabis accessories.
(c) Cannabis and cannabis products involved in any way with conduct deemed lawful by this section are not contraband nor subject to seizure, and no conduct deemed lawful by this section shall constitute the basis for detention, search, or arrest.