Except as provided in Sections 6505, 6506, and 6923 a nursery stock certificate need not be affixed to nursery stock if it is sold at retail and delivered to the purchaser at any sales location which is licensed in accordance with Article 2 (commencing with Section 6721) and Article 3 (commencing with Section 6741) of Chapter 1 of this part.
Ca. Food and Agric. Code § 6924