N.J. Stat. Ann. § 4:8-17.20

It shall not constitute a violation of this act for any person to have sold or offered or exposed for sale agricultural, vegetable, flower, tree or shrub seed, which was incorrectly labeled or represented as to kind, variety, type or origin (if required), which seed cannot be identified by examination thereof, unless he has failed to obtain an invoice, genuine grower's or tree seed collector's declaration or other labeling information and to take such other precautions as may be reasonable to insure the identity to be that stated. A genuine grower's declaration of variety shall affirm that the grower holds records of proof concerning parent seed, such as invoice and labels.