CBG biomass is dried plant material from CBG-dominant hemp cultivars, bought by extractors as feedstock, and CBG crude is the first extract made from it, typically around 60% CBG after winterization and decarboxylation. Both are priced on tested cannabigerol content, so the core sourcing discipline is the same: verify CBG percentage, total THC, moisture, and contaminants on a lot-specific COA, then normalize every quote to cost per gram of CBG. This guide covers what CBG biomass and crude are, how they differ from CBD feedstock, the quality metrics to require, how to plan extraction output, and how to vet a supplier.
What Are CBG Biomass and CBG Crude?
CBG biomass is the harvested and dried aerial material of CBG-dominant hemp: flower, trim, and smaller leaf, sometimes with stem. These cultivars are bred so that most of the plant's CBGA is not converted into CBDA or THCA, which leaves 10 to 15% CBG content at harvest instead of the 0.5 to 1% found in standard CBD hemp. In the field and in the bag, almost all of that content is still in the acid form, CBGA; it becomes neutral CBG only after heat during processing. Biomass COAs therefore often report CBGA and a calculated "total CBG" value.
CBG crude is the first extract from that biomass. After ethanol or CO2 extraction, the oil is winterized to strip fats and waxes and decarboxylated to convert CBGA to CBG. BCD's representative CBG crude oil COA shows about 60% CBG and about 72% total cannabinoids, with CBD around 8.6% and CBC around 2.6% as the main minor cannabinoids. Crude is an in-process material: most buyers distill it into CBG distillate or crystallize it into isolate rather than putting it straight into finished goods.
Who buys each one? Extraction labs and toll processors buy biomass. Distillation and isolation operations, and manufacturers who want to skip extraction, buy crude.
How Does CBG Biomass Differ From CBD Biomass?
The handling and testing framework is the same as for CBD feedstock, covered in our hemp biomass buyer and extractor guide. The economics and a few technical points differ.
| Factor | CBG biomass | CBD biomass |
|---|---|---|
| Target cannabinoid at harvest | 10 to 15% CBG (as CBGA) | Varies by cultivar; priced on CBD % |
| Typical secondary cannabinoid | Residual CBD, small CBC | CBG, CBC, THC fractions |
| Supply base | Smaller, fewer cultivars | Large, many cultivars |
| Harvest timing | Manage timing for THC compliance | Wider window |
| THC compliance profile | Often low THCA, still must be tested | THCA rises late in season; frequent hot-lot risk |
| Price basis | Per pound, normalized to cost per gram CBG | Per pound, normalized to cost per gram CBD |
Two practical consequences follow. First, because the CBG supply is smaller, you will see wider price dispersion between lots and suppliers, which makes per-gram normalization essential. Second, harvest timing matters more: a CBG lot harvested late can show different potency and higher total THC than the grower's earlier test suggested, so insist on a COA from the actual lot you are buying, not a pre-harvest field test.
Quality Metrics to Require on Every Lot
Every lot of CBG biomass or crude should come with a lot-specific COA from an ISO 17025-accredited, DEA-registered third-party laboratory. Check these metrics before you commit.
CBG Percentage
For biomass, look for total CBG on a dry-weight basis, calculated as CBG + (CBGA x 0.878). The 0.878 factor accounts for the mass lost when CBGA loses its carboxyl group. For crude, look for CBG by weight and total cannabinoids; a crude near 60% CBG with low residual CBGA indicates complete decarboxylation.
Total THC Compliance
Total THC must be calculated as Delta-9 THC + (THCA x 0.877), and biomass must sit at or below 0.3% on a dry-weight basis to meet the federal hemp definition under the USDA hemp program. When Section 781 takes effect, the federal definition moves to a total THC standard for hemp products as well, so a crude that reports only Delta-9 is not enough documentation. Remember that THC concentrates during extraction: a biomass lot at 0.2% total THC can yield a crude well above 0.3%, which is normal for in-process material but must be planned for in remediation and documentation.
Moisture
Properly dried hemp biomass sits in the 8 to 12% moisture range. Above that range, mold and microbial risk rise during storage. Because biomass is sold by weight, every extra point of moisture is water you are paying for at biomass prices. Get moisture on the COA or test at delivery, and calculate price on a dry-weight basis.
Contaminants
Pesticides, heavy metals (lead, arsenic, cadmium, mercury), and microbials must pass with individual analyte results. Contaminants concentrate during extraction, so a marginal biomass result becomes a failing crude result. For crude, add residual solvents to the list. Our step-by-step guide to reading a hemp COA shows how to confirm the lab's accreditation scope and match the COA to your lot.
Need CBG Feedstock?
BCD supplies CBG crude oil and can quote CBG biomass availability on request. Listed COAs are representative; the batch COA ships with every order. Request a wholesale quote with your target volume and specs.
How Is CBG Biomass Processed Into Crude?
The sequence matches CBD processing, with attention to CBGA conversion.
- Size reduction. Dried biomass is milled to a consistent particle size so solvent contact is even.
- Extraction. Ethanol (often chilled to reduce wax and chlorophyll pickup) or supercritical CO2 pulls cannabinoids and terpenes from the plant material.
- Winterization and filtration. The extract is chilled in ethanol and filtered to remove fats, waxes, and lipids.
- Solvent recovery. Ethanol is recovered under vacuum for reuse.
- Decarboxylation. Controlled heating converts CBGA to CBG. Incomplete decarb shows up as residual CBGA on the crude COA and as lower apparent CBG potency.
- Testing and release. The crude is tested by a third-party lab before sale or further refinement.
From crude, the next steps are distillation into a 70 to 90% distillate or crystallization into 99%+ CBG isolate. Each step loses some mass, so plan feedstock purchases against your final product target, not against the crude alone.
Planning Extraction Output: A Worked Mass Balance
Extraction yield depends on input potency, method, equipment, and operator practice, so no single number fits every lab. The useful planning tool is a simple mass balance using the lot's COA value and your own process efficiency. The ranges below are illustrative planning assumptions, not guarantees.
- Input: 100 kg of biomass at 14% total CBG (dry weight) contains about 14 kg of CBG.
- Extraction and decarb efficiency (assumption): if your process recovers 70 to 90% of the input cannabinoid, you capture about 9.8 to 12.6 kg of CBG.
- Crude potency: at about 60% CBG in the finished crude, that is roughly 16 to 21 kg of crude, or about 16 to 21% of input biomass weight.
- Downstream: refining that crude to an 80% distillate at an assumed 80 to 90% recovery yields roughly 10 to 14 kg of distillate.
Two rules keep these numbers honest. Use the lot COA value, never the supplier's advertised range. And run your own efficiency figure from past batches; a new lab should start with a conservative assumption and correct it after the first runs. The same math lets you compare biomass against crude: if your fully loaded cost per gram of CBG through extraction exceeds the per-gram price of finished crude, buying crude is the better deal.
How Should You Vet a CBG Feedstock Supplier?
Feedstock deals carry more fraud risk than finished ingredients because volumes are large and testing is easy to misrepresent. Apply the same checks you would for any wholesale CBD supplier, plus a few feedstock-specific ones.
- Lot-specific COA, verified at the lab. Confirm the COA with the issuing lab and match the sample ID to the lot being shipped.
- Accreditation scope. The lab must be ISO 17025-accredited for cannabinoid potency, not just for some other test.
- Chain of custody. For biomass, documentation from harvest through delivery is your defense against lot substitution.
- Retained samples. Ask the supplier to hold a retained sample of each lot so disputes can be retested.
- Independent confirmation. On first orders or large volumes, send your own sample to a third-party lab before final payment on the full volume.
- Price sanity check. A CBG price far below market per gram usually signals a quality, potency, or documentation problem.
Our guide to vetting a legitimate B2B supplier walks through these checks in more detail.
MOQs, Lead Times, and Ordering
BCD sells CBG crude online in 1kg, 3kg, 5kg, and 10kg sizes, with larger volumes by quote. Across the catalog, MOQs run 100g to 1kg depending on the product, and most orders ship within a few days. Biomass availability depends on harvest and lot, so request a quote with your target CBG percentage and volume.
Every order is an order request. BCD confirms availability and the batch COA for your lot, then takes payment after order confirmation by card or wire. Listed COAs are representative; the batch COA ships with every order. You can browse current feedstock in the biomass category and CBG products in the CBG category.
What This Means for Your Business
If you extract in-house, CBG biomass is the lowest-cost route to CBG, but only when you price it per gram of tested CBG on a dry-weight basis and plan output from your own process efficiency. If you do not extract, CBG crude moves you one step closer to finished material without the capital and compliance load of an extraction line. Either way, the decisions that protect margin are the same: lot-specific COAs, total THC calculated in full, moisture and contaminant checks, and a supplier who can document chain of custody. For how CBG then fits into finished formulas, see our CBG vs CBD formulator's comparison.
Ready to Source CBG Biomass or Crude?
Tell us your target CBG percentage, volume, and timeline. Listed COAs are representative, and the batch COA ships with every order. Most orders ship within a few days.
Frequently Asked Questions
What is CBG biomass?
Dried plant material from CBG-dominant hemp cultivars, typically 10 to 15% CBG on a dry-weight basis, sold as feedstock for extraction.
What is CBG crude oil?
The first extract from CBG biomass, winterized and decarboxylated. BCD's representative COA shows about 60% CBG and about 72% total cannabinoids.
Why does the biomass COA show CBGA instead of CBG?
Raw plant material holds cannabinoids mostly in acid form. Total CBG is calculated as CBG + (CBGA x 0.878); heat during processing converts CBGA to CBG.
How much crude will I get from CBG biomass?
It depends on input potency and your process. At 14% CBG and an assumed 70 to 90% recovery, 100 kg of biomass yields roughly 16 to 21 kg of 60% crude. Use your own efficiency data.
What moisture level is acceptable for CBG biomass?
8 to 12% is the standard range for properly dried biomass. Above 14% raises mold risk, and price should always be calculated on a dry-weight basis.
Can CBG crude exceed 0.3% total THC?
Yes. THC concentrates during extraction, so crude from compliant biomass can test above 0.3%. It is in-process material and is normally remediated during refinement; confirm handling and documentation with your supplier.
Is CBG biomass more expensive than CBD biomass?
Generally yes per gram of target cannabinoid, because CBG cultivars are fewer and harder to grow. Always compare on cost per gram of CBG, not price per pound.
Should I buy CBG biomass or CBG crude?
Buy biomass if you run your own extraction and your cost per gram through extraction beats crude pricing. Otherwise crude saves capital, labor, and compliance work.
What contaminants should I test for in CBG feedstock?
Pesticides, heavy metals, and microbials for biomass; add residual solvents for crude. Contaminants concentrate during extraction, so marginal results matter.
What is BCD's minimum order for CBG crude?
CBG crude is listed from 1kg. Across the catalog, MOQs run 100g to 1kg depending on the product, and most orders ship within a few days.
Related Reading
- Hemp Biomass for Sale: B2B Buyer and Extractor Guide
- CBG Distillate: What It Is and How to Buy It in Bulk
- CBD Crude Oil: What It Is and How to Source It in Bulk
John Piccone
Founder, Bulk CBD Distributors | johnpiccone.com
John Piccone has been active in hemp and CBD since the first year of Farm Bill legalization. Before founding Bulk CBD Distributors in 2020, he helped build two of the early industry's most significant companies (including a major hemp farming operation that was among the first to grow legally at scale in Puerto Rico and Barcelona, Spain) and contributed to generating a high eight-figure revenue year before those businesses exited the market. BCD has grown into one of the most respected wholesale cannabinoid operations in the US hemp industry, built deliberately small, tactically efficient, and deeply connected across the supply chain. Learn more about BCD.