Corrections and Data Requests

If something on this site is wrong, we want to know. Corrections that change a status, tier or claim create a new record version with a logged change.

Last updated August 24, 2026

Report an error

Open an issue in the repository or email marko.visic7@gmail.com. Include the page URL, the record id if shown (for example onion--carrot--pest_suppression), what you believe is wrong, and a source if you have one.

Request a plant or pair

Tell us the plant (common and scientific name) or the pair. We add plants when there is enough reviewed growing information to write a substantive page, and pairs when there is a source or a clear debunking need. Requests help us prioritise; they do not create records without evidence.

Challenge a status

Send the study you believe changes the picture. We record the crop, arrangement, context and outcome, compare it with the existing record, and either update the status, add a linked conflicting record, or explain why it does not meet the inclusion rules. You will get a reply either way.

What happens next

  1. Acknowledgement within a few days.
  2. Review against the methodology.
  3. Change committed with a new version and review date, or a written explanation.

The commit history of src/data/ is the public change log.

Our Methodology & Sources

We synthesize peer-reviewed research, university extension publications, and trusted horticulture resources. Our evidence levels help you understand how strong the science is behind the guidance.

Evidence tiers

Supported evidenceConsistent results from multiple robust studies
Traditional claimHistorical use reported, limited scientific support
Context dependentMixed or variable results across conditions
No verified relationshipNo reliable evidence identified

Primary source types

  • Peer-reviewed journal articles
  • University extension publications
  • Government & research institute reports
  • Systematic reviews & meta-analyses

Last updated

August 24, 2026

Learn more about our approach