Skip to content
Lockbox Seeds

Horticulture reference

Drying and curing

Published horticulture references describe the dry-and-cure phase as the stage where the result of the previous fourteen weeks of cultivation can be compromised in less than a fortnight. A flash dry is documented as locking in chlorophyll and producing the harsh, hay-tasting profile noted in many grower complaints; a too-slow dry in a humid environment is documented as producing mould and lost material. The cure that follows the dry is documented as the phase that develops the aromatic and combustion profile described in breeder marketing copy. This reference covers the documented targets, the published timelines, and the rescue protocols described when something goes wrong in the jar.

Written by

Research Desk

Research editor

Reviewed

2026-05-23

8 min read

Purpose

Educational reference. Not legal, medical, or growing advice.

Table of contentsShow
  1. Target conditions in published references
  2. Documented drying duration
  3. Jar curing as documented
  4. The burping cadence in published protocols
  5. Failed jars as described in grower reports

Target conditions in published references

The documented dry-room target is 15 to 18 °C and 55 to 62% relative humidity, in a space with gentle air movement but no direct fan flow on the buds.[1] At those numbers, a properly hung photoperiod plant is documented as reaching jar-ready moisture in ten to fourteen days; trimmed buds on a rack are documented as finishing in six to nine. The documented reason this range matters is that drying is described as a chemical process, not only water removal — chlorophyll is documented as breaking down at temperature and humidity within this window, and a dry that finishes outside it is described in grower reports as producing bud that tastes green even after a long cure.[2] A spare bedroom in winter with the heat off and the door shut is documented as often sitting in the target range without active control.

For active control, published protocols describe a small dehumidifier set to 60% and a heater or AC unit to hold temperature steady. A passive carbon filter pulling air gently through the room is documented as handling odour. Direct light is documented as degrading trichomes during the dry the same way it does in storage, so the room is described in references as needing to be dark or the buds covered with breathable cloth. Speeding up a slow dry by raising the temperature is documented as accelerating terpene evaporation, with anything above 21 °C described as producing a flatter aromatic profile in the jar.

Documented drying duration

The documented test for jar-ready buds is the snap test on the small stems. Published references describe bending a 3 to 5 mm stem coming off a mid-canopy bud — if it bends and stays bent, the bud is documented as not ready; if it snaps cleanly with a crisp break, the bud is documented as ready for jars. The outer bud is described in published material as feeling dry and slightly crunchy to the touch while the inner core remains cool and faintly moist, with this moisture inversion documented as the condition the cure requires. Bone-dry buds throughout are documented as having overshot the dry; the cure is described in published reports as unable to fully recover what was lost, though a 62% Boveda pack is documented as partially rehydrating.

Eight days is documented as the typical hang time for a 4-by-4 home harvest at the target environmental conditions. Two-pound branches from heavier sativa-leaning plants are documented in grower reports as sometimes needing eleven to fourteen days; small autoflowers are documented as finishing in six. Published protocols describe daily checks from day five onward — once the snap test passes consistently across three or four buds from different parts of the plant, the documented next step is breaking the plant down and jarring.

Jar curing as documented

Published references describe wide-mouth one-litre glass jars with airtight lids as the standard cure vessel — kitchen mason jars and dedicated cure jars sold by gardening shops are documented as functionally equivalent. The documented fill level is two-thirds to three-quarters full, leaving headroom for air exchange. Buds are described as packed gently rather than crushed. A 62% Boveda pack in each jar is documented as a controlled-cure approach; skipping packs and relying on the buds' residual moisture is documented as a more traditional approach that requires closer attention. Both are documented as functional; the Boveda approach is described in published material as more forgiving for a first-time grower.

Published storage protocols describe a cool, dark cupboard at 18 to 21 °C. Temperature swings are documented as the largest threat — a jar in a window that warms to 28 °C in the afternoon and cools to 15 °C at night is documented as sweating moisture against the glass and re-wetting the buds unevenly. A cupboard with stable temperature is described in published references as more important than hitting the exact target number.

The burping cadence in published protocols

Burping is documented as opening the jars briefly to release trapped moisture and metabolic gases, then resealing. For the first week of the cure, published protocols describe burping twice daily — opening the jar for two or three minutes morning and evening, with a gentle shake to redistribute. The aroma off a freshly-opened jar in week one is documented as grassy and sharp, which is described as normal. The documented week-two cadence is once daily for five minutes; week three is every other day; week four is twice a week. By six weeks the cure is documented as essentially complete, and the jars are described as stable for indefinite storage.[3]

Published grower reports describe noticeable quality gains through about week eight, with marginal gains beyond that point. Long-cured jars at six months are documented as having a more developed aroma profile than the same material at eight weeks. A small hygrometer inserted into the top of each jar is described as removing the guesswork — the documented target range is 58 to 62% RH. Readings above 65% are documented as indicating the jar is too wet and needs more open burping; readings below 55% are documented as indicating the jar is too dry, with a 62% Boveda pack described as rehydrating within a few days.

Failed jars as described in grower reports

A jar that registers ammonia, sweat, or wet-hay aromas on opening is documented as too wet, with bacterial activity described as having started. Published rescue protocols describe pouring the jar out onto a clean surface, spreading buds in a single layer on a drying rack, and running them at 18 °C and 55% RH for 24 to 48 hours until moisture drops, then re-jarring with a 62% Boveda pack and resuming burping. The off-odour is documented as usually resolving; published references describe genuinely musty smell or visible fuzzy white or grey growth on the calyxes as indicating mould, with the documented response being permanent removal of affected buds from the jar. Mould on one bud is documented as contaminating the entire jar.

Prevention is documented as the actual solution. Published protocols describe jarring at the right moisture, burping on schedule for the first week, and using a hygrometer rather than guessing. Most failed cures documented in grower reports trace to jarring while still too wet, with the documented cause being impatience at the eight-day mark before the snap test passed.

Lockbox Seeds publishes reference material about cannabis horticulture for educational purposes. The legal status of cannabis cultivation, possession, and post-harvest processing varies by jurisdiction; readers are responsible for understanding the law where they live.

Back to all horticulture references.

References

  1. Rosenthal, E. Marijuana Grower's Handbook: Your Complete Guide for Medical and Personal Marijuana Cultivation (2010). Quick American Archives.
  2. Ross, S. A. & ElSohly, M. A. The Volatile Oil Composition of Fresh and Air-Dried Buds of Cannabis sativa. Journal of Natural Products (1996). Journal of Natural Products, Vol. 59, Issue 1.
  3. Cervantes, J. The Cannabis Encyclopedia: The Definitive Guide to Cultivation and Consumption of Medical Marijuana (2015). Van Patten Publishing.