Cal. Food & Agric. Code § 6502

Any shipment of less than five pounds of agricultural, vegetable, or flower seed, or comprised of packages of less than three pounds of each kind of such seed, is exempt from the requirements of this article. The shipping permit which would be required by Article 2 (commencing with Section 6921), Chapter 2, Part 3, of this division for such a shipment may be waived by the commissioner.