Short answer

The 2018 Farm Bill made hemp legal under federal law. Hemp is cannabis with 0.3% THC or less on a dry weight basis. CBD from hemp sits under that rule. CBD from plants above 0.3% THC does not. Federal law covers all 50 states. State law applies on top of it.

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No federal rule requires a seller to ask your age. No federal rule requires a lab test. Those come from state law and from the seller's own policy.

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Four checks before you pay

  1. Certificate of analysis. Look for a batch number, a lab name, and a test date. The COA should list THC, CBD, pesticides, heavy metals, and residual solvents.
  2. THC number. 0.3% dry weight is the federal line. Idaho sets its limit at 0%. Some states count total THC, not delta-9 THC alone.
  3. Age. Most sellers set 21 and older. Some set 18 and older. State law decides.
  4. Shipping address. A few states restrict what can be delivered.

State rules differ

States run three tiers. Some allow hemp CBD with the federal 0.3% cap. Some allow only CBD with 0% THC. Some cap THC below 0.3% or ban delta-8 THC products. Check your state agriculture department or health department page before you order. Rules change.

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Where the FDA stands

The FDA has not approved CBD as a dietary supplement or a food ingredient. The agency approved one CBD drug, Epidiolex, for seizures. Sellers that make disease claims risk warning letters. That limits what a seller may say. It does not make the product illegal to buy.

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Payment and shipping

Card networks restrict CBD merchants. Some banks block the charge. ACH and e-check options often work. USPS accepts hemp shipments that meet federal law, with documentation. Private carriers set their own rules.

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