CA Food & Agric Code Section 6921

It is unlawful for any person to ship, or cause to be shipped, any nursery stock from one county or locality of the state to another county or locality within the state unless he has marked upon such nursery stock in a conspicuous manner and place both of the following:

(a)

The name and address of the shipper, owner, or person that is forwarding the nursery stock.

(b)

The name of the person, or his agent, to whom the nursery stock is forwarded.