Cannabis Possession Limits — What You Can Legally Carry

The Baymard Institute's analysis of 49 separate studies found average cart abandonment across online retail sits at 70.19%. And in the cannabis delivery space, misunderstanding possession limits drives a different kind of abandonment: orders cancelled mid-fulfillment because a customer didn't realize their cart exceeded what they could legally receive in one transaction. Under Proposition 64, adults 21 and older can possess 28.5 grams of cannabis flower and 8 grams of cannabis concentrate at any given time. Those numbers are absolute thresholds. Not recommendations, not guidelines, not averages across product types. One gram over on concentrate turns a lawful delivery into a misdemeanor charge.

We've reviewed the analytics for hundreds of delivery orders. The pattern is consistent: customers ordering for the first time routinely select quantities that exceed possession limits without realizing it, and those who understand the flower limit often don't know that edibles, tinctures, and topicals all count toward the 8-gram concentrate cap. The gap between placing a legal order and receiving a legal delivery comes down to knowing how the law categorizes what you're buying. And most product pages don't spell that out.

What are the cannabis possession limits for adults?

Adults 21 and older can legally possess up to 28.5 grams (approximately one ounce) of cannabis flower and up to 8 grams of cannabis concentrate at any given time. Concentrate includes all non-flower products: wax, shatter, live resin, edibles, tinctures, and topicals. Exceeding either limit. Even by a fraction of a gram. Is a misdemeanor punishable by a fine and potential jail time. The weight measured is the usable cannabis content, not the total product weight including packaging.

Yes, the law draws a hard line at 28.5 grams of flower and 8 grams of concentrate. But what trips up most users is category classification. Edibles don't count as flower even though they're cannabis-infused food; they count as concentrate because the THC was extracted and then added to the product. A 100mg edible package typically contains 0.1 grams of concentrate by THC content, but the exact weight calculation varies by manufacturing method. Our team has found that customers ordering multiple product types. Flower, a cartridge, and edibles. Routinely exceed the 8-gram concentrate limit without realizing all three non-flower items stack toward the same cap. This article covers the exact category definitions, how packaging and product weight interact, what happens when you exceed the limits unintentionally, and how to structure orders that stay within legal bounds while meeting your actual needs.

How the Law Categorizes Cannabis Products

The law recognizes two possession categories: flower and concentrate. Flower means the dried, cured bud of the cannabis plant. What most people call 'weed' or 'bud'. Concentrate means any product where cannabinoids have been extracted from the plant material through mechanical or chemical means. The critical distinction: if THC was removed from the plant and then infused into something else, it's concentrate. This means edibles. Gummies, chocolates, baked goods. Count as concentrate despite appearing as food. Tinctures, topicals, vape cartridges, wax, shatter, live resin, distillate, and THC-infused beverages all fall under the 8-gram concentrate limit.

The 8-gram cap applies to the total THC content across all concentrate products combined, not to the gross product weight. A 1-gram cartridge filled with 900mg of distillate counts as 0.9 grams toward your limit. A 10-pack of 10mg gummies (100mg total THC) counts as approximately 0.1 grams. The math matters because customers frequently order a cartridge, a pack of edibles, a tincture, and a jar of wax in one transaction. Four separate products that together can easily exceed 8 grams of concentrate. Our menu lists the THC content per product, which translates directly to concentrate weight for possession limit purposes.

Where Possession Limits Apply and Where They Don't

Possession limits apply to what you physically carry in public, what you transport in a vehicle, and what you store in your residence if that residence is not your private property. The 28.5-gram flower and 8-gram concentrate caps are 'on-your-person' limits. They govern what you can have with you outside your home at any moment. Inside your private residence, you can legally possess more than these amounts if the excess is stored in a locked container inaccessible to minors. The law does not set a maximum for in-home possession beyond the locked-storage requirement.

In a vehicle, the same possession limits apply, but the cannabis must also be in a sealed container in the trunk or in a location not accessible to the driver or passengers while the vehicle is in motion. An open or partially used product in the passenger compartment. Even if the total quantity is under 28.5 grams. Violates the open-container rule and can result in a separate infraction. We've reviewed this across hundreds of delivery transactions: customers receiving cannabis at their home can accept quantities exceeding possession limits as long as they immediately store the excess in a locked container inside the residence. The delivery itself must not put you over the limit in public. Meaning the handoff occurs at your door, not in a vehicle or on the street.

The True Cost of Exceeding Possession Limits

Exceeding possession limits is a misdemeanor in most cases. Possession of more than 28.5 grams of flower (but less than one ounce over) or more than 8 grams of concentrate (but less than a specific threshold set by case law) typically results in a citation, a fine, and potential probation. The fine ranges from $500 to several thousand dollars depending on the amount over and whether it's a first offense. Possession significantly above the limits. Interpreted as possession with intent to distribute. Elevates the charge and can result in jail time. The threshold where possession becomes presumed intent to sell varies by jurisdiction and prosecutorial discretion, but quantities more than double the legal limit consistently trigger this scrutiny.

Here's the honest answer: most people who exceed possession limits do so unintentionally. They order products online, the total concentrate weight across cartridges and edibles exceeds 8 grams, and they don't realize the violation until law enforcement makes contact for an unrelated reason. The misdemeanor stays on your record, affects employment background checks, and in some cases triggers probation conditions that prohibit any cannabis use. Legal or not. A single order that puts you 2 grams over the concentrate limit can cost you more in legal fees and lost employment than the cannabis itself was worth.

Key Takeaways

• Adults 21 and older can possess 28.5 grams of cannabis flower and 8 grams of cannabis concentrate. Exceeding either limit by any amount is a misdemeanor.
• Concentrate includes all non-flower products: edibles, cartridges, tinctures, wax, shatter, and topicals. The 8-gram cap applies to total THC content across all these products combined.
• Possession limits apply to what you carry in public and in vehicles; inside your private residence you can possess more if the excess is stored in a locked container inaccessible to minors.
• A misdemeanor possession charge carries fines from $500 to several thousand dollars, stays on your criminal record, and can affect employment. Most violations happen unintentionally when customers order multiple concentrate products in one transaction.
• The weight that counts is usable cannabis content, not total product weight including packaging. A 1-gram cartridge with 900mg of distillate counts as 0.9 grams toward your concentrate limit.
• Exceeding limits significantly (more than double) triggers presumption of intent to distribute, which elevates the charge from misdemeanor to felony in most jurisdictions.

What If: Cannabis Possession Limit Scenarios

What If I Order 30 Grams of Flower for Home Delivery?

The delivery service cannot legally complete the order. Possession limits apply at the point of transfer. The moment the product changes hands. If the driver hands you 30 grams in one transaction, both you and the driver are in possession of an amount exceeding the legal limit during that transfer. The standard practice: the delivery service either splits the order into two separate deliveries on different days, or they reduce the quantity to 28.5 grams and refund or credit the excess. Attempting to receive 30 grams in one delivery puts both parties at legal risk, and most licensed services will cancel the order rather than complete it.

What If I'm Carrying 25 Grams of Flower and 10 Grams of Concentrate?

You are over the concentrate limit by 2 grams. Even though your flower amount is legal, the concentrate overage is a misdemeanor. Law enforcement making contact for any reason. A traffic stop, a public disturbance, a random compliance check. Will measure both categories separately. The fact that you're under the flower limit does not offset the concentrate violation. The charge applies to the concentrate excess, and you'll be cited or arrested based on that 2-gram overage alone.

What If I Buy Cannabis in One State and Drive It Across State Lines?

Possessing cannabis across state lines is a federal offense regardless of the quantity or the legality in both states. Federal law classifies cannabis as a Schedule I controlled substance, and transporting it across state boundaries. Even between two states where cannabis is legal. Is drug trafficking under federal statute. Penalties include federal felony charges, asset forfeiture, and mandatory minimum sentences in some cases. State possession limits become irrelevant the moment you cross a state line with cannabis in your vehicle.

The Unflinching Truth About Cannabis Possession Limits

The bottom line: possession limits exist to separate personal use from commercial distribution, and the thresholds are set deliberately low to make that line clear. A person carrying 28.5 grams of flower is assumed to be using it themselves; a person carrying 60 grams is assumed to be selling it. The law doesn't care whether you actually intended to sell. The quantity alone creates the presumption, and you bear the burden of disproving intent in court. The concentrate limit of 8 grams reflects the same logic: that's enough for several weeks of personal use for most consumers, and anything beyond that amount raises distribution suspicion.

What makes this particularly costly for cannabis delivery customers is that concentrate products. Cartridges, edibles, wax. Are easy to stack in small increments. A customer ordering two cartridges, a pack of gummies, a tincture, and a jar of shatter might have 12 grams of concentrate without realizing it because each individual product seems modest. The law does not recognize 'I didn't know they all counted together' as a defense. We mean this sincerely: checking your cart's total concentrate weight before checkout is not optional if you want to stay on the right side of a misdemeanor charge.

Cannabis delivery makes possession limits a shared responsibility between the customer and the service. At Seaweed Delivery, we calculate total flower and concentrate weight for every order before fulfillment and flag orders that exceed limits. But the ultimate legal liability falls on the person in possession when law enforcement makes contact. Structuring your order within legal limits and understanding how product categories stack is the only reliable way to avoid unintentional violations that carry consequences far beyond the cost of the cannabis itself.