Section 14538 Of Article 2. Definitions From California Food And Agricultural Code >> Division 7. >> Chapter 5. >> Article 2.

. "Hydroponics" means a system in which water soluble primary or secondary plant nutrients or micronutrients, or combination thereof, are placed in intimate contact with the plant's root system, being grown in a water or an inert supportive medium which supplies physical support for the roots but which does not add or subtract primary or secondary plant nutrients or micronutrients, or both.