Cal. Food & Agric. Code § 57585

The lien claimant shall provide written notice to secured creditors at least 30 days prior to enforcing a claim of lien. For purposes of this section, “secured creditors” means any entity named as a secured party in a financing statement filed with regard to the debtor and which covers crops subject to the lien, crops growing or grown on the land, or the next production crops to be grown on the land if the crops are not planted, where the agricultural chemical or agricultural seed was provided or applied, farm products, or accounts.