Short answer
Plan on 2 to 4 weeks of jar curing for cannabis that smokes well, and 4 to 8 weeks for the full cure that brings out flavor and smoothness. Buds must be dry to the touch but still spongy before they go in the jar. Burp the jars once a day for the first 7 to 10 days, then drop to every 2 or 3 days until the humidity inside the jar holds steady between 58 and 62 percent.
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What happens during the cure
Curing is a chemical finish, not a drying step. Inside a sealed jar, leftover moisture moves from the center of the bud to the surface, and enzymes break down sugars and chlorophyll that cause harsh smoke. Oxygen gets consumed and carbon dioxide builds up, which is why the jar needs to be opened. Get the moisture wrong in either direction and the batch either molds or stalls.
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Cure timeline
- Week 1: Burp daily for 5 to 10 minutes. The smell may read grassy or like hay. Jar humidity often sits at 65 percent or higher.
- Week 2: Burp each day or every other day. Humidity settles toward 62 percent and the hay note fades.
- Weeks 3 and 4: Burp every 2 to 3 days. Flavor and aroma sharpen. Most growers stop here.
- Weeks 5 to 8: Burp once a week. Smoke gets smoother and the terpene profile deepens.
Step by step
- Dry the branches until small stems snap instead of bending.
- Trim the buds and fill each jar about three quarters full so air can move.
- Place a small hygrometer in the jar and close the lid.
- Open the jar for 5 to 10 minutes the next day, then close it again.
- Repeat each day while the reading sits above 62 percent.
- Cut back to every 2 or 3 days once the reading holds between 58 and 62 percent.
- Seal the jars and store them in a dark place at 60 to 70 F.
Signs the cure is finished
The jar no longer smells like cut grass when you open it. Humidity holds steady between 58 and 62 percent for several days with the lid closed. Buds are dry on the outside, springy when squeezed, and grind without turning to dust. If the jar smells like ammonia or the buds feel wet, return them to a drying rack for a few hours.
Common mistakes
- Jarring buds before the stems snap, which invites mold.
- Skipping the hygrometer and guessing at moisture.
- Burping for an hour at a time and drying the batch out.
- Storing jars in sunlight or a warm room.
How long cured cannabis keeps
A finished cure holds quality for 6 to 12 months in sealed glass at room temperature. After that, THC converts to CBN and terpenes fade. Vacuum sealing or adding a humidity pack stretches that window, but the first two months after the cure are when the flower tastes best.