# Stem snap test

> A drying check: when small stems snap cleanly rather than bend, buds are usually dry enough to trim or jar for curing.

- Canonical: https://genetixbay.com/knowledge/glossary/stem-snap-test.html
- Also written: stem snap, snap test, snap the stem, stem bend test, small stem snap
- Glossary category: Harvest, drying and curing · Evidence: Grower practice
- Status: Draft: awaiting expert review · Updated: 2026-10-31
- Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary"

The stem snap test is the quickest way to judge when drying is done. Bend a small stem (a bud's stem or a thin branch tip): if it folds and stays bendy, the material is still too wet; if it snaps with a slight crack while larger stems still bend, buds are typically ready to jar. If big stems shatter like twigs, the dry has probably gone too far.

## In practice

Start testing around day 5-7 of a slow dry. Test several branches from different parts of the room, especially those carrying the densest [colas](https://genetixbay.com/knowledge/glossary/cola.md), which dry last.

House position: the stem snap is one of three checks, not the whole answer. Combine it with:
- a calibrated hygrometer in a sealed jar, read after it has equilibrated (target about 55-65% [RH](https://genetixbay.com/knowledge/glossary/relative-humidity.md), i.e. about 0.55-0.65 aw);
- weight loss, typically [dry weight](https://genetixbay.com/knowledge/glossary/dry-weight.md) at roughly 20-25% of fresh.

Stems hold more water than buds, which is why a stem snap usually means the outer bud is a little drier than the core. That's also why the first days in the jar call for checking.

## Don't confuse with

- **Supercropping**: deliberately crushing or bending live stems during the grow; "[stem snapping](https://genetixbay.com/knowledge/glossary/supercropping.md)" belongs there.
- **Case hardening**: dry outside, wet inside; a snap test can miss it on dense buds.
- **Over-drying**: stems shatter, buds crumble.

## Related terms

[Water activity](https://genetixbay.com/knowledge/glossary/water-activity.md), [Moisture content](https://genetixbay.com/knowledge/glossary/moisture-content.md), [Hang dry](https://genetixbay.com/knowledge/glossary/hang-dry.md), [Curing](https://genetixbay.com/knowledge/glossary/curing.md)

## Read more

- [Drying cannabis: the 60/60 method and water activity](https://genetixbay.com/knowledge/harvest-cure/drying.md)
- [Curing and burping: jars, humidity and how long](https://genetixbay.com/knowledge/harvest-cure/curing-burping.md)

## Sources

1. ASTM D8197. Standard Specification for Maintaining Acceptable Water Activity (aw) Range (0.55 to 0.65) for Dry Cannabis Flower. ASTM International. https://store.astm.org/d8197-22.html