A cannabis quart is a volume measurement of roughly 946 milliliters, or 32 fluid ounces. When people talk about cannabis quarts, they usually mean a quart-sized jar of dried flower rather than a regulated weight: a quart jar typically holds about one to two ounces of cured cannabis, depending on bud density and moisture.
Because legal cannabis is sold by weight, the term comes up mostly in home growing, home curing, and informal bulk sales. The sections below cover what a quart actually holds, why quart jars became the default storage vessel, and what to verify before you buy flower in that kind of quantity.
What cannabis quarts usually means
- Volume, not weight. A quart is one quarter of a gallon. It says nothing about how much the flower inside weighs.
- A quart jar. The wide-mouth mason jar is the most common container for curing and storing dried flower.
- Bulk shorthand. Outside licensed retail, sellers sometimes quote flower by the quart instead of by gram or ounce.
Licensed dispensaries in the United States sell cannabis by weight, using grams and ounces. If you see a listing priced per quart, treat the container size as a rough guide and ask for the net weight and test results.
Glass Hash: What It Is, How It's Made, and How to Judge It
How much cannabis fits in a quart jar
There is no single answer, because flower is not a uniform product. Four things change the fill:
- Bud density. Tight, dense buds pack more weight into the same space than airy, leafy flower.
- Moisture content. Properly dried and cured flower weighs less than flower that still holds water.
- Trim quality. Whole buds with sugar leaves take up more room than closely trimmed flower.
- How you pack it. Filling a jar to the brim compresses trichomes, so leaving some headspace is standard.
As a working estimate, growers commonly describe a full quart jar as holding somewhere around one to two ounces of cured flower, with the low end for fluffy or loosely packed buds and the high end for dense, well-trimmed ones.
Why quart jars became the standard
- Glass is inert. It does not absorb or release odors the way plastic can.
- Airtight lids. Two-piece metal lids limit air exchange, which slows oxidation of cannabinoids and terpenes.
- Easy burping. During curing, opening the lid for a few minutes lets excess moisture escape.
- Practical size. A quart holds a personal stash without leaving a lot of empty air above the flower.
Light and heat degrade cannabinoids, so store jars in a dark cupboard rather than on a sunny shelf.
Quarts, quarters, and ounces
Quart and quarter sound almost identical and mean completely different things. A quarter of cannabis is a quarter of an ounce, about 7 grams. A quart is a container that can hold many times that amount. Common weight terms at a licensed retailer include:
- One gram
- An eighth, about 3.5 grams
- A quarter, about 7 grams
- A half ounce, about 14 grams
- An ounce, about 28 grams
Storing CBD flower in a quart jar
CBD-rich hemp flower behaves much like high-THC flower in storage. Keep these habits:
- Use a clean, dry glass jar with a tight seal.
- Add a two-way humidity pack if the flower is too dry or too damp. Growers often aim for relative humidity in the high 50s to low 60s percent range inside the jar.
- Open the jar briefly if you notice condensation or a sharp ammonia smell.
- Keep the jar out of direct sunlight and away from warm rooms.
- Label the jar with the strain, the date, and the lab report if you have one.
Buying flower by the quart: what to check
- Net weight. Ask for grams or ounces, not just a container size.
- Third-party lab results. A certificate of analysis shows cannabinoid content and screens for pesticides, heavy metals, and mold.
- Harvest and packaging dates. Older flower loses terpenes and potency.
- Local purchase limits. State rules cap how much cannabis a customer can buy at once, and those limits apply no matter how the flower is packaged.
FAQ
Is a quart of cannabis a pound?
No. A quart measures volume and a pound measures weight. A quart jar normally holds far less than a pound of dried flower.
Is a quart jar good for long-term cannabis storage?
Yes, if it seals well, stays out of light, and the flower inside is properly dried. Add a humidity pack and check the jar periodically for mold or condensation.
Why do some sellers price cannabis by the quart?
Volume pricing is common in informal or unregulated markets where flower is not weighed and labeled. Licensed sellers price by weight and publish test results.