California Code, Business and Professions Code - BPC § 26227.8

(a) An association may organize, form, operate, own, control, have an interest in, own stock of, or be a member of any other association, with or without capital stock, that is engaged in growing, harvesting, curing, drying, trimming, packing, grading, storing, or handling of any cannabis product that is handled by the association, or the byproducts of the cannabis product.

(b) Any two or more associations that are organized pursuant to this section may be merged into one constituent association or consolidated into a new association.  The merger or consolidation shall be made in the manner that is prescribed by the general laws of the state that cover domestic corporations.