How to Register as an Industrial Hemp Grower or Breeder in California
California law requires all growers and breeders of industrial hemp to register with the county agricultural commissioner in each county where they intend to cultivate before any planting begins. This registration system — administered by the CDFA under Division 24 of the California Food and Agricultural Code and Title 3 of the California Code of Regulations — is the gateway to lawful hemp cultivation in California, and it operates on fundamentally different principles than the DCC cannabis licensing system.
The registration application must be submitted to the county agricultural commissioner and include: the applicant’s name, physical address, and contact information; GPS coordinates and a legal description of each intended cultivation site; the varieties (cultivars) to be planted and the seed source; identification of all “key participants” (sole proprietors, partners, and persons with executive managerial control); and an FBI Identity History Summary (criminal history report) for each key participant. The annual registration fee is $900 per registrant per county — meaning a cultivator operating in multiple counties must submit a separate application and fee to each county’s agricultural commissioner. Once the application is reviewed and approved — a process that includes the commissioner confirming that the proposed sites comply with county zoning and any local industrial hemp ordinances — the commissioner issues a proof of registration along with a letter documenting the registered key participants, cultivation sites, and approved cultivars.
Key Differences from Cannabis Licensing
| Feature | Cannabis (DCC License) | Hemp (CDFA Registration) |
|---|---|---|
| Issuing agency | Department of Cannabis Control | County agricultural commissioner (CDFA oversight) |
| Application portal | CLEaR or CLS online systems | Paper application to county ag commissioner |
| Background checks | Full background check for all owners (20%+ interest) | FBI Identity History Summary for key participants |
| Investor disclosure | Financial interest holders (10%+) must be disclosed | No passive-investor disclosure requirement |
| CEQA compliance | Required for all annual licenses | Not required |
| Surety bond | $5,000 minimum per premises | Not required |
| Track-and-trace | Metrc enrollment required | Not required |
| Annual fee | Varies by license type ($1,205–$163,710) | $900 per county |
| THC testing | Post-harvest compliance testing by licensed lab | Pre-harvest sampling by county ag commissioner |
| Consequences of failed THC test | Batch remediation or destruction per DCC rules | Crop destruction within 45 days; 3 failures in 5 years = 5-year ban |
| Interstate transport | Prohibited (intrastate only) | Protected by 2018 Farm Bill |
Pre-Harvest Sampling, THC Compliance, and Crop Destruction Risk
One of the most consequential aspects of hemp registration is the pre-harvest THC sampling and testing regime. County agricultural commissioners collect samples from registered hemp fields within 30 days before the anticipated harvest, and the samples are tested for total delta-9 THC concentration. If the crop tests above the acceptable THC level, it cannot be harvested and must be destroyed in accordance with a destruction plan approved by the commissioner. A grower who accumulates three negligent violations within a five-year period — including THC test failures, failure to register before planting, and failure to provide required cultivation-site information — is banned from hemp registration for five years under Food and Agricultural Code section 81012. This crop-destruction risk has no parallel in the cannabis licensing system, where a failed compliance test results in batch-level remediation or destruction but does not jeopardize the license itself or trigger a cumulative-violation ban. Hemp growers should select cultivars with demonstrated compliance histories, monitor growing conditions that can elevate THC (heat stress, late harvest timing), and understand the commissioner’s sampling protocols to minimize the risk of a crop-destruction event.
Representative Matters
- Registered an industrial hemp cultivator across two California counties, coordinating separate applications, FBI Identity History Summaries for all key participants, GPS mapping of cultivation sites, and confirmation of local ordinance compliance with each county agricultural commissioner.
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Advised a hemp seed breeder on the CDFA‘s distinct breeder registration requirements under FAC section 81004, including approved cultivar documentation and seed-source chain-of-custody recordkeeping.
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Represented a hemp grower whose crop tested above the acceptable THC threshold, negotiating with the county agricultural commissioner on the destruction timeline, documenting the circumstances to support a “negligent” rather than “intentional” violation classification, and advising on corrective measures to preserve eligibility for future registration.
Frequently Asked Questions
If the crop is industrial hemp (cannabis sativa with no more than 0.3% delta-9 THC on a dry weight basis), you register with the county agricultural commissioner under CDFA rules. If the crop is cannabis (above 0.3% THC), you need a DCC cultivation license. The regulatory systems, agencies, fees, and compliance requirements are entirely separate.
California Food and Agricultural Code section 81006 prohibits growing industrial hemp on the same premises used for cannabis cultivation under a DCC license. This is a hard prohibition with no variance or waiver process.
The crop must be destroyed within 45 days under a destruction plan approved by the county agricultural commissioner. The failed test counts as a negligent violation, and three negligent violations within five years results in a five-year ban from hemp registration.
Yes. A separate registration application and $900 fee must be submitted to the agricultural commissioner in each county where cultivation will occur.
It is a federal criminal background report required for all key participants in a hemp registration. It can be obtained through the FBI’s Identity History Summary Request process, either electronically or by mail.