# Evidence ladder

> The GenetixBay evidence ladder labels every growing claim as Established, Supported, Grower practice, Contested or Myth, according to how strong the evidence is.

- Canonical: https://genetixbay.com/knowledge/glossary/evidence-ladder.html
- Also written: Established, Supported, Grower practice, Contested, Myth, evidence labels
- Glossary category: GenetixBay terms
- 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 evidence ladder is the set of five labels GenetixBay uses on knowledge-base articles, glossary entries and Greenleaf answers to show how well a claim is supported.

## In practice

A reader can see at a glance whether advice is settled science or lore. Pre-harvest [flushing](https://genetixbay.com/knowledge/glossary/flushing.md) is labelled *Myth*; [supercropping](https://genetixbay.com/knowledge/glossary/supercropping.md) for better buds is *Grower practice*, house-endorsed; mild late drought is *Supported*. [Bay Trials](https://genetixbay.com/knowledge/glossary/bay-trials.md) exist to move claims up or down the ladder with controlled member grows, and Mythbusters shows the verdicts.

Some topics carry a GenetixBay house position set by the founder. Those are stated plainly with their label rather than presented as evenly balanced.

## Units and formula

| Label | Meaning |
|---|---|
| Established | Multiple studies or extension consensus |
| Supported | Some research, or strong grower consensus consistent with research |
| Grower practice | Widely used, little formal research |
| Contested | Evidence conflicts or is thin on both sides |
| Myth | Evidence contradicts the claim |

## Don't confuse with

- **Evidence levels L0-L4**: for lineage claims on [GB-ID](https://genetixbay.com/knowledge/glossary/gb-id.md) records, not growing advice.
- **Peer review**: one input to a label, not a label itself.

## Related terms

[Evidence levels L0-L4](https://genetixbay.com/knowledge/glossary/evidence-levels-l0-l4.md), [Mythbusters](https://genetixbay.com/knowledge/glossary/mythbusters.md), [Bay Trials](https://genetixbay.com/knowledge/glossary/bay-trials.md), [Open research](https://genetixbay.com/knowledge/glossary/open-research.md)

## Read more

- [Pre-harvest flushing: a myth that costs you yield and resin](https://genetixbay.com/knowledge/harvest-cure/flush-debate.md)