Regulations for Selling Live Worms and Worm Castings

Note I am not a lawyer, nor does this post constitute legal advice. You may use this post as a starting point for your research, but you will need to check with your local agencies before taking any action. If you plan on shipping worm castings you must follow the regulations for your state, the destination state, and any states the castings may travel through to get to their destination.

You will first need to decide how you will label and market your worm castings as the laws for each are distinct.

There are 3 main classifications for your worm castings. You will want to choose one that accurately highlights the strengths of your worm castings, but is easy enough for you to qualify for still.

Soil Amendment or Soil Conditioner

• This is the easiest classification to qualify for, but the most restrictive on what you can say with your marketing.

Fertilizer

• If your worm castings have notably high nutrient quality, this may be the best choice for you.

Biological Product or Microbial Inoculant

• If your emphasis is on microbial diversity, this may be your best choice. However, depending on how you do it, can be the hardest to qualify for.

You may also choose to register your worm castings as Organic, or get them OMRI certified. At the moment I won't include that in this post.

Product Identity: Must be clearly designated as a "Soil Amendment," "Soil Conditioner," or "Vermicompost."

Active & Inactive Ingredients: Active ingredients listed by percentage or name (e.g., Active Ingredient: 100% Earthworm Castings).

Statement of Purpose: Plain-language explanation of how the product improves soil (e.g., "Adds organic matter to improve soil structure and moisture retention").

Net Contents & Guarantor Details: Standard dry weight (lbs/kg) or volume, along with the manufacturer or distributor’s physical business name and address.

General, non-quantified descriptions of natural organic processes (e.g., "Derived from a natural vermicomposting process that supports soil microbial diversity").

Standard application rate charts and crop/gardening instructions.

No NPK Ratios Allowed: Primary nutrient numbers (e.g., 1-0.5-0.5) are strictly prohibited; listing them forces reclassification as a fertilizer.

No Unsubstantiated Biological Guarantees: Cannot list specific microbial counts (e.g., "Contains 10 million bacteria per gram") without triggering inoculant laws.

Alaska, Arizona, Colorado, Hawaii, Idaho, Nevada, New Hampshire, New York, Utah, Vermont, Wyoming, other U.S. Territories do not have specific soil amendment statutes. If you make no fertilizer or biostimulant claims, no state registration is required.

Additionally, California, Kansas, Oregon, and Pennsylvania require pre-market registration, labeling, full 5-heavy-metal laboratory test reports (Arsenic, Cadmium, Lead, Mercury, Nickel).

Wisconsin and Washington enforce all previous registration laws plus mandated lab validation proving complete pathogen reduction (zero detectable Salmonella or E. coli) if worm bedding includes raw manure or waste inputs.

Brand / Product Name: Must state what it is clearly (e.g., Red Wiggler Earthworm Castings).

Grade (The N-P-K Ratio): The minimum percentage of Total Nitrogen, Available Phosphate, and Soluble Potash, expressed as whole numbers or fractions (e.g., 1 - 0.5 - 0.5 or 0.5 - 0.2 - 0.2).

Guaranteed Analysis: A rigid, mandatory block printed in a standard AAPFCO format.

Derivation Statement: Printed directly below the Guaranteed Analysis stating where the nutrients come from (e.g., "Derived from: Earthworm Castings" or "Derived from: Vermicompost").

Net Weight or Net Volume: Stated in standard units (e.g., 25 lbs / 11.33 kg or 1 Cu. Ft. / 28.3 L).

Name & Full Address of Registrant/Manufacturer: The legal entity responsible for the product.

Directions for Use: Mixing ratios for potting soils, top-dressing rates for garden beds, or application rates per square foot. (Many states make directions mandatory if sold to retail home gardeners).

Secondary Plant Food Claims: Claims for Calcium, Magnesium, Sulfur, or Iron—provided you list them under the Guaranteed Analysis and meet AAPFCO minimum detectable percentage thresholds.

General Soil Conditioning Claims: Statements like "Improves soil structure," "Enhances water retention," or "Adds organic matter" are allowed alongside fertilizer claims in most dual-registration states.

Heavy Metals Internet Statement: Many states require (and all allow) AAPFCO's uniform heavy metals statement:

"Information regarding the contents and levels of metals in this product is available on the internet at http://www.aapfco.org/metals.htm"

Unverified Pesticidal or Disease-Suppression Claims: You cannot state or imply that your castings "kill pests," "prevent root rot," "suppress Pythium," or "repel pests." Making pest or disease claims turns your product into an unregistered Pesticide under federal FIFRA rules (EPA oversight).

Zero Guarantees in the Analysis Block: You cannot write 0% for an N-P-K element inside the official Guaranteed Analysis block. If an element is zero, omit that line (or use a fractional minimum if trace amounts exist and meet thresholds).

Unbacked Microbial / Biostimulant Guarantees: You cannot list specific bacteria or fungi (e.g., "Contains 1x10^6 CFU/g Bacillus subtilis") under the fertilizer section unless registered under specific state Soil & Plant Inoculant / Biostimulant regulations with laboratory assay guarantees.

Open-Ended Chemical Abbreviations: Chemical symbols like "N," "P," or "K" cannot be used alone in the guaranteed analysis table without their full legal names (Total Nitrogen, Available Phosphate, Soluble Potash).

Superlative / False Advertising Claims: Words like "100% Safe for All Plants," "Chemical-Free," or "Non-Toxic" are strictly prohibited by AAPFCO model rules because any input can cause root burn if misapplied.

Alaska & Hawaii: Neither state maintains active commercial fertilizer product registration programs for standard mainland imports (standard Hawaii biosecurity import permits still apply to physical contents).

Every Other State Besides Alaska & Hawaii require, in addition to the guaranteed analysis and derived from statement on the label, requires a state distributor license, routine tonnage sales reports, and inspection tax payments ($0.10–$1.50 per ton). These states can also sample products from store shelves and may fine you if the nutrients are lower than what is guaranteed.

Additionally, Florida, New York, & Pennsylvania require complete heavy metal screening panels for all land-applied organic materials and charge quarterly mill assessment fees on total tonnage sold.

California, Oregon, & Washington: Enforce all previous regulations, plus mandate that heavy metal test results be published on public state databases. In California, fertilizer products are subject to strict CDFA retail shelf sampling and quarterly sales mill assessments.

Standardized Heading: A dedicated panel titled CONTAINS BENEFICIAL SUBSTANCE(S) (or ALSO CONTAINS BENEFICIAL SUBSTANCE(S) if combined with a fertilizer analysis).

Exact Genus & Species: Full scientific names for every guaranteed microorganism (e.g., Bacillus subtilis).

Viable Unit Guarantees: Quantitative counts expressed in colony-forming units per weight or volume (e.g., 1.0 x 10^6 CFU/g

Expiration Date & Storage Conditions: A mandatory expiration date (e.g., Exp: 10/2027) alongside explicit storage instructions (e.g., Store between 40°F and 75°F).

Non-Microbial Percentage (if applicable): Active non-microbial biostimulants (e.g., humic acids) must list their weight percentage and origin source (e.g., Humic Acids derived from leonardite... 2.0%).

Inactive Ingredients & Net Contents: Percentage of inactive carrier material (e.g., Vermicompost... 98.0%), net weight/volume, and guarantor name and address.

General Biostimulant Claims: Statements regarding natural soil processes, such as "Supports soil biological activity," "Enhances root development," or "Aids in plant nutrient uptake."

Combined Fertilizer Guarantees: A standard NPK Guaranteed Analysis block, provided you register the item as a dual-purpose product (Fertilizer + Beneficial Substance) and pay both state fees.

Directions for Use & Dilution Rates: Application instructions for soil drenches, foliar feeds, or potting mixes.

No Generic "Biomass" Claims: States reject visual or aggregate mass metrics like "Contains 15% bacterial biomass" or "High fungal weight." Guarantees must be measurable in viable units (CFU/g).

No Pesticide / Disease-Suppression Claims: Statements claiming the product "suppresses root rot," "kills Pythium," "repels pests," or "controls parasitic nematodes" reclassify the product as an EPA-regulated pesticide under FIFRA, requiring federal registration.

No Unbacked Microbial Species: You cannot list microorganisms on the label unless you have submitted independent accredited lab Certificates of Analysis (CoAs) proving viability over the product's shelf life.

Texas: Exempts unrefined biological products only if no performance or active biological claims are made on packaging or marketing. Making an explicit claim (e.g., "Rich in mycorrhizae") forces full compliance with other laws.

Every other state just needs the tests done to be able to provide all the information required for the label listed above.

Additionally, Pennsylvania, Wisconsin, & Washington: Enforce all baseline labeling and genus/species requirements, plus require manufacturers to supply laboratory proof that added microbes remain viable throughout processing without off-gassing or degrading retail packaging.

On top of the previous requirements, California & Oregon enforce strict SB 1522 and AAPFCO beneficial substance standards. Manufacturers must submit an independent accredited lab Certificate of Analysis (CoA) and specific assay methods. ODA and CDFA actively sample retail shelves; if lab testing reveals counts below 85% of the claimed guarantee, stop-sale orders are issued.

Liquid extracts follow the same state agricultural registration rules as its solid product equivalent (amendment, fertilizer, or biological product). If registering a liquid tea as a fertilizer, low nutrient concentrations require multi-decimal laboratory testing (e.g., Nitrogen at 0.002%) to support label guarantees.

California, Oregon, and Pennsylvania evaluate liquid organic amendments for shelf stability. Active off-gassing, container expansion, or anaerobic degradation can lead to removal from store shelves.

Minnesota, Kansas, Texas, Florida, North Carolina and Georgia state that products mixed or formulated specifically for a single end-user and applied directly by the service provider are exempt from standard retail product registration. So if you are making brew on-site and not bottling it for retail sale then you shouldn't need any registration.

Shipping standard composting species (Eisenia fetida / Red Wigglers and Eisenia hortensis / European Nightcrawlers) across the lower 48 states does not require federal USDA PPQ 526 permits, provided organisms are shipped completely free of native soil and plant debris.

Wisconsin, Minnesota, New York, Illinois, and Connecticut prohibit or restrict the transport, sale, or possession of Amynthas species (Jumping Worms).

Oregon, Washington, and Maine regulate live worm distribution through state Departments of Fish & Wildlife to prevent non-native introductions into waterways and forest ecosystems.

California and Florida require shipments of tropical composting species like Perionyx excavatus (Indian/Blue Worms) to be inspected to prevent exotic plant pest introductions.

Bringing any live earthworm species into Hawaii requires both a federal USDA PPQ 526 Permit and a Hawaii Department of Agriculture (HDOA) import permit, subject to strict quarantine inspections. To qualify for the PPQ 526 is a bunch of work so its really not worth it to ship to Hawaii.

And for those of you in the worm business who don't already know, Hungry Worms is the main supplier of red wigglers for many of the more well known worm sellers in the country, as well as many of the lesser known and smaller guys. If you want to learn about my wholesale/resale rates reach out to me and we'll see if it could be a good fit!