Growing hemp for CBD and CBG pays off only when the harvest meets the specifications that extractors and bulk buyers actually purchase against: cannabinoid percentage, total THC compliance, moisture, clean contaminant results, and complete documentation. Buyers price biomass and flower on tested cannabinoid content and reject lots that fail compliance or arrive wet or contaminated. This guide explains, from the buyer's side of the table, what extraction labs and wholesale buyers look for and how farms can sell into that market.
What Do Biomass Buyers Look For First?
An extraction lab or wholesale buyer evaluates a hemp lot as a raw material, not as a crop. The question is simple: how much usable cannabinoid does this lot contain, is it legally compliant, and will it arrive in a condition that protects that value?
In practice, buyers screen lots in roughly this order:
- Compliance first. A lot without a passing pre-harvest compliance test and a valid license is not saleable at any price.
- Potency second. Price is usually set per pound or per kilogram and adjusted for tested cannabinoid percentage, so a lot at 10% CBD is worth far more than a lot at 5%.
- Condition third. Moisture, mold, foreign matter, and contaminant results decide whether the lot can go into an extractor or onto a retail shelf.
- Documentation throughout. Buyers need paperwork they can hand to their own customers and auditors.
Cannabinoid Percentage: CBD and CBG Targets
Cannabinoid percentage is the single largest driver of what a buyer will pay. Extraction economics depend on how much cannabinoid comes out of each pound processed, so higher-potency material carries a lower processing cost per gram of finished extract.
CBD biomass
Commercial CBD biomass typically tests in a range of about 3 to 8% total CBD by dry weight when total THC stays at or below 0.3%, with most wholesale lots falling between 5 and 7%. A lot at 8% CBD contains 1.6 times the cannabinoid of a lot at 5%, which is why buyers adjust price so sharply for potency. Ethanol extraction commonly yields crude oil at roughly 8 to 12% of input biomass weight, a figure extractors use when they calculate what a lot is worth to them. Our hemp biomass buyer and extractor guide covers pricing and yield planning in more detail.
CBG flower and biomass
CBG-dominant genetics are grown for cannabigerol, the non-intoxicating cannabinoid whose acid form, CBGA, is the precursor to CBDA and THCA in the plant's biosynthesis. Quality wholesale CBG flower generally tests between about 8 and 15% CBG, with most commercially available lots in the 10 to 15% range. CBG flower may carry small amounts of CBD alongside its CBG. Harvest timing still matters for total THC compliance. See our wholesale CBG flower sourcing guide for buyer-side specifications.
Biomass versus smokable flower
Biomass is sold to extractors who care about cannabinoid content per pound. Smokable flower is sold to retailers and brands who also care about appearance, trim quality, bud structure, aroma, and terpene content (often 1 to 3% in well-finished flower). Many farms sell top colas as flower and route trim into biomass.
How Does Total THC Compliance Testing Work?
Federal rules define hemp by total THC: the sum of delta-9 THC and THCA (converted with a decarboxylation factor) reported on a dry weight basis must be 0.3% or less. The definitions are set out in 7 CFR 990.1, and growers are licensed through a state, tribal, or federal plan approved under the USDA Domestic Hemp Production Program.
Key points buyers will check:
- Pre-harvest sampling. Under USDA's rules, samples must be collected by a sampling agent, not the producer, within 30 days before the anticipated harvest, and the crop may not be harvested before sampling occurs. Testing must be done by a DEA-registered third-party laboratory, though USDA has delayed enforcement of that requirement until December 31, 2026.
- Total THC, not delta-9 alone. A result that reports only delta-9 THC tells a buyer nothing about THCA, which converts to THC on heating. Buyers expect total THC on the report.
- Lots that fail. A lot above the acceptable level must be disposed of or remediated under the applicable plan, and remediated material must be resampled and retested before it can move.
- Section 781. When Section 781 of P.L. 119-37 takes effect, the federal hemp definition will expressly count THCA in total THC and add new limits on intermediate and final products. The CRS summary of Section 781 is a useful starting point.
Practical takeaway for growers: choose genetics with a stable, documented total THC history in your region, sample on schedule, and harvest promptly once the compliance window opens. Late harvests raise total THC risk at the same time they can lower CBG content.
Moisture, Storage, and Contaminants
More hemp value is lost after harvest than most first-year growers expect. Wet or poorly stored biomass can lose both weight and saleability in days.
Moisture targets
- 8 to 12% moisture is the standard range for properly dried biomass and finished flower.
- Above 14%, mold susceptibility rises sharply, and many buyers will reject or discount the lot.
- At higher moisture levels, microbial risk rises further and many extractors will not accept the material.
Moisture also distorts pricing: at 15% moisture the buyer is paying for water. Buyers commonly test moisture on arrival and adjust or reject accordingly.
Drying and storage practices buyers respect
- Dry promptly after cutting with good airflow, and avoid excessive heat that drives off terpenes.
- Store in clean, dry, covered space off the ground, in sealed bags, totes, or lined containers.
- For flower, aim for about 45 to 55% relative humidity and roughly 18 degrees Celsius; well-stored flower can hold quality for 12 to 18 months.
- Label every container with lot number and harvest date so the material can be matched to its test results.
- Keep different lots physically separated. Mixing lots invalidates the compliance and potency results attached to each.
Contaminants and the lab panel
Compliance testing answers only the THC question. A full panel from a DEA-registered third-party laboratory usually covers:
- Cannabinoid potency, including CBD, CBDA, CBG, CBGA, THC, and THCA.
- Pesticides, listed by individual analyte rather than a single pass or fail line.
- Heavy metals: lead, arsenic, cadmium, and mercury. Hemp readily takes up metals from soil, so field history matters.
- Microbials, including total yeast and mold and specific pathogens.
- Foreign matter: stems, soil, seeds, and debris that add weight without value.
Farms that soil-test before planting and keep spray records can answer buyer questions quickly. Our guide on how to read a hemp COA shows how buyers read each section of a lab report.
How Do Farms Sell Biomass and Flower?
There are several common routes to market, and each has a different risk profile for the grower.
| Sales route | How price is set | Main advantage | Main risk |
|---|---|---|---|
| Spot sale of dried biomass | Per pound, adjusted for tested potency | Simple, fast if specs are strong | Price set by market at sale time |
| Pre-season contract | Agreed formula tied to specs | Known buyer before planting | Lot can be rejected if specs miss |
| Toll processing | Farm pays extractor a processing fee | Farm keeps the extract | Farm must then sell the extract |
| Smokable flower wholesale | Per pound by grade and potency | Higher value per pound for top grades | Strict appearance and handling standards |
Whichever route you choose, put the specifications in writing: minimum potency, maximum total THC, moisture range, contaminant limits, the lab that will test at delivery, and what happens if a retest disagrees with your results.
How Should a Farm Work With a Buyer?
Buyers return to growers who make purchasing easy and predictable. A few habits make a large difference:
- Send representative samples. A sample should come from the actual lot, collected across multiple containers, not hand-picked from the best plants.
- Provide a complete document packet. Grower license, pre-harvest compliance test, full-panel COA, lot numbers, harvest dates, and weights.
- Agree on a testing protocol. Decide in advance which lab tests at delivery and how differences between results will be settled.
- Be accurate on volume. Overstating available pounds damages trust faster than a modest potency miss.
- Keep chain of custody clean. For larger orders, buyers want documentation from harvest through delivery to confirm the lot they tested is the lot they received.
What This Means for Your Business
For growers, the buyer's checklist is the business plan. Selecting genetics with a reliable total THC record, sampling and harvesting on time, drying to 8 to 12% moisture, and testing on a full panel turn a harvest into a saleable lot. Yields and prices vary widely by region, genetics, and season, so use any single figure as a planning range, not a promise.
For manufacturers, brands, and extraction labs buying hemp, the same checklist is your quality filter. Ask for potency, total THC, moisture, contaminant results, and chain of custody on every lot. If you would rather buy finished material, the same checks apply to wholesale hemp flower and refined ingredients: ask for the lot COA and confirm it matches the material that ships.
Compare Biomass and Flower Lots
If you are buying rather than growing, you can compare current lots and COAs in the hemp biomass and CBG flower collections. BCD carries hemp biomass, and CBG flower is being restocked. We are glad to answer questions or put together a quote.
Frequently Asked Questions
What CBD percentage do buyers expect in hemp biomass?
Commercial CBD biomass typically tests at about 3 to 8% total CBD by dry weight when total THC stays at or below 0.3%, with most wholesale lots between 5 and 7%. Higher potency usually earns a higher price per pound because it lowers extraction cost per gram.
What CBG percentage makes CBG flower marketable?
Quality wholesale CBG flower generally tests between about 8 and 15% CBG, and most commercial lots fall between 10 and 15%. Total THC must still be 0.3% or less on a dry weight basis.
How is total THC calculated for compliance?
Total THC combines delta-9 THC and THCA, with THCA converted using a decarboxylation factor, reported on a dry weight basis. The federal limit is 0.3% or less.
When must hemp be sampled before harvest?
Under USDA's hemp rules, a sampling agent must collect samples within 30 days before the anticipated harvest, and the crop cannot be harvested before sampling. Your state or tribal plan may add its own requirements.
What moisture level should dried biomass be?
Buyers generally want 8 to 12% moisture. Material above 14% carries a higher mold risk and is often discounted or rejected.
What contaminant tests do biomass buyers require?
Most buyers want a full panel from a DEA-registered third-party laboratory covering potency, pesticides, heavy metals, microbials, and foreign matter, tied to a specific lot number.
What happens if my hemp tests above the THC limit?
The lot must be disposed of or remediated under the applicable state, tribal, or USDA plan. Remediated material must be resampled and retested before it can be sold.
Should I sell biomass or smokable flower?
Biomass suits farms focused on volume and potency for extractors. Smokable flower can earn more per pound for top grades but requires careful harvesting, trimming, drying, and storage to meet retail appearance standards.
What documents should a farm send to a buyer?
A grower license, the pre-harvest compliance test, a full-panel COA, lot numbers, harvest dates, weights, and chain of custody records for larger shipments.
How does Section 781 affect hemp growers?
When Section 781 of P.L. 119-37 takes effect, the federal hemp definition will expressly include THCA in total THC and add limits on intermediate and final products. Growers should expect buyers to scrutinize THC results more closely.
