Cannabis Kief

Kief is the collection of resin glands, called trichomes, that separate from cannabis flower. The glands hold THC, CBD, terpenes, and other compounds. Kief looks like a fine powder. Color ranges from tan to light green. THC content in kief runs from 20% to 60%. By comparison, dried cannabis flower holds 10% to 25% THC.

The Ultimate Guide to Edibles Made with Cannabis Kief

How Kief Forms

Trichomes grow on the surface of cannabis buds, leaves, and stems. The glands store cannabinoids. When plant material moves, dry trichome heads break off. A grinder with a mesh screen collects this powder in a lower chamber. Screen size common in grinders is 75 to 150 microns. A finer screen yields cleaner kief.

Kief Potency vs Flower: Pick Kief for THC, Flower for Dose

How to Collect Kief

You can also use a kief box or a dry sifter. These tools have larger screens and produce more kief from trim.

cannabis kief vs hash difference

THC Content and Effects

Kief is not a solvent extract. It is a mechanical concentrate. Lab tests show THC levels from 20% to 60%. A 0.05 gram dose of kief with 40% THC delivers 20 mg THC. That dose is high for new users. Start with 0.01 to 0.02 grams. Effects include relaxation, mood change, and appetite increase. Onset time is 1 to 5 minutes when smoked or vaped.

top kief collecting grinders

How to Use Kief

Decarboxylation

Raw kief holds THCA, not THC. Heat converts THCA to THC. Set an oven to 240°F. Spread kief on parchment paper in a thin layer. Bake for 30 to 40 minutes. The kief turns dark and smells nutty. Decarbed kief is ready for edibles or tinctures.

Storage

Store kief in an airtight glass jar. Keep the jar in a cool, dark place. Heat, light, and air degrade THC. Kief stored at 70°F loses about 10% potency in 6 months. A freezer extends shelf life to 1 year. Label the jar with the date and strain name.

Kief vs Hash

Kief is loose trichomes. Hash is kief that has been pressed and heated. Pressing breaks trichome heads and fuses the resin. Hash holds 40% to 80% THC. Kief holds 20% to 60% THC. Both are solventless cannabis products.

Legal Status

Kief is a cannabis product. In the United States, cannabis and its concentrates are Schedule I under federal law. State laws differ. Check local rules before you buy, possess, or make kief.