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COAs, labels, extraction, formulation, storage, authenticity and buying criteria
Quality & BuyingAn eighth is 3.5 grams by convention and 3.54 by arithmetic. Here is the full gram-to-ounce chart, what the law asks of the scale and the label, the 3% drying allowance adopted in 2024, and the one data-based estimate we found of how much weed is in a joint.
Quality & BuyingWhite ash is supposed to prove weed was flushed and grown clean. In the only blind rating of ash by flush length, white was the rarest color in every group. Here is what ash color can tell you, what it cannot, and what to check instead.
Quality & BuyingEvery top result on what good weed looks like gives you the same checklist. We added the evidence column: which signs are stop signs, which track chemistry, which are just taste, and the one document that answers what your eyes cannot.
Quality & BuyingA dab is not a stronger joint. In the one study that compared them, concentrate users had about twice the blood THC yet similar impairment. Here is the arithmetic, what heating a concentrate produces, and what nobody has measured yet.
Quality & BuyingIs indoor weed stronger, and is outdoor weed dirtier? What the few head-to-head studies measured, why the THC gap on labels is partly the lab, where each method's contamination risks come from, and what "sun-grown" legally means.
Quality & BuyingA dry-herb vaporizer heats cannabis flower without burning it, and in two controlled studies that kept exhaled carbon monoxide from rising. It does not cut the dose: the same amount can hit harder. Here is what the research measured, and what it has not.
Quality & BuyingShake is the loose material at the bottom of a bag of flower: broken bud, leaf and fallen resin glands. Is it as strong as bud? Here is what plant-part studies measured, what state rules say about trim, what "mids" means, and how to check any tier.
Quality & BuyingA blunt and a joint can hold the same cannabis. The wrapper is the real difference: cigar leaf carries nicotine, and in a randomized lab study blunts raised carbon monoxide more. Here is what the research measured and what "tobacco-free" wraps do not guarantee.
Quality & BuyingTHC distillate is refined THC oil, but it rarely reaches you on its own. Here is what public labs found added back during the 2019-2020 vaping outbreak, what states banned afterward, where converted THC fits, and how to read the paperwork.
Quality & BuyingA THC percentage is a concentration, not a dose, and on flower it often runs higher than a lab measures. Here is what six label audits found, how to turn a percentage into milligrams, and why a bigger number did not mean a bigger high for regular users.
Quality & BuyingWeed does not spoil like food. It slowly loses THC and aroma, and it can grow mold, which is the real reason to throw it out. Here is what storage studies measured, where the famous 16% figure comes from, and how to store and check an old bag.
Quality & BuyingA home CBD test kit answers a smaller question than the box implies. Here is what color tests, TLC kits and handheld testers can resolve, the published limits sellers do not cite, and the questions only a lab can answer.
Quality & BuyingOne word, four unrelated drinks: seed-derived, plant-material, hemp beer and formulated cannabinoid beverages. The ingredient line sorts them in seconds, and the only number that settles what is in the can is milligrams per container, not per serving.
Quality & BuyingA Proposition 65 warning on a CBD bottle is a statement about California law and delta-9-THC, not a lab result about your batch. Here is what the box says, what OEHHA's own record says about CBD, and what to read instead. Checked September 5, 2026.