Where to Buy Nugs: Advice First
Most nugs sold online in the US are hemp flower. Federal law defines hemp as Cannabis sativa L. with a delta-9 tetrahydrocannabinol concentration of 0.3% or less on a dry weight basis. That limit comes from the 2018 Farm Bill and USDA hemp rules.
Buy from a seller that posts a batch-specific certificate of analysis (COA) from an accredited lab. No COA means no data. You are guessing about pesticides, mold, and THC content.
Check 1: The Batch COA
Match the COA lot number to the lot number printed on the package. Check the lab name, its license or ISO/IEC 17025 accreditation, and the test date. A test older than 12 months does not describe the flower in your jar.
Panels to look for: potency (delta-9 THC, THCA, CBD, CBG), pesticides, heavy metals, residual solvents, microbials, mycotoxins, moisture, and water activity.
Check 2: Total THC
THCA converts to THC when heated. Total THC = delta-9 THC + (0.877 x THCA). A jar can read 0.2% delta-9 THC and still land at or above the 0.3% line after conversion. Some states use this formula to decide what may be sold inside their borders.
Check 3: Seller Type
- Licensed hemp farms: sell direct, list harvest dates, publish one COA per cultivar and lot.
- State dispensaries: sell THC flower in states with medical or adult-use programs. Age 21+, or 18+ with a medical card in some states.
- Online hemp retailers: ship to most states. A handful of states restrict hemp flower. Read the shipping policy before you pay.
- Gas stations and smoke shops: poor storage, no lot numbers, no COA on request. Skip.
Parameters to Compare
- Delta-9 THC: 0.3% or less, dry weight.
- Total THC: run the 0.877 math yourself.
- Water activity: under 0.65. Higher numbers invite mold.
- Harvest date: within 12 months of purchase.
- Price per gram: $5 to $15 for small lots is common. Bulk lots run lower.
- Shipping map: the states a seller refuses to ship to.
Pitfalls
- A COA image with no lab name, license number, or batch ID.
- One COA reused across many lots and cultivars.
- "THCA flower" sold as a workaround. THCA is not THC under the federal statute, but a lighter or oven changes that.
- Medical claims. The FDA has not approved CBD for food, dietary supplement, or drug use, except one prescription seizure drug.
- No age gate at checkout.
- Cash-only or app-only payment with no stated refund policy.
Before You Pay: 6-Point Checklist
- Batch number on the COA equals the batch number on the package.
- Lab name and accreditation are visible.
- Test date falls within 12 months.
- Total THC math lands under 0.3%.
- Panels cover pesticides, heavy metals, and microbials.
- Return policy and shipping states are in writing.
Price alone tells you little. A $30 eighth with a full panel and a matching lot number beats a $10 eighth with no paperwork.