Cal. Food and Agricultural Code - FAC § 6961. Section 6961.
The director may issue regulations which will govern the issuance and form of nursery stock certificates and shipping permits and their use on shipments of nursery stock, to insure the relative freedom from pests of all nursery stock which is produced or sold within the state, and which will evidence compliance with the following:
(a)
The inspections and standards of cleanliness in Article 1 (commencing with Section 6901).
(b)
The nursery stock grades and standards in Chapter 5 (commencing with Section 53301).
(c)
Any other law, or lawful order which is issued by the director or the commissioner, relating to the production or sale of nursery stock within the state, or any shipment thereof except where a specific certificate or permit is required by any quarantine regulation which is issued pursuant to Sections 5301, 5302, or 5322.