Community Guidelines

Last updated August 24, 2026

What an observation is

A structured report of what you did and what you saw: the pair, direction, approximate region and climate, season, varieties, bed type, layout, distance, dates, any comparison, the pest or disease involved, and the outcome. It is anecdotal by definition and is labelled that way.

What to include and what to leave out

  • Do give your country or region and approximate climate. Never give an address or exact coordinates; the form does not ask for them and we would remove them.
  • Do say whether you compared with a plot without the companion; most reports will not have one, and that is fine, just say so.
  • Do note conflicts of interest (for example, you sell the seed).
  • Do not include other people's personal information or photographs of people.

Moderation

Community submission is designed for a future external service with a moderation queue. Until then, the observation form saves drafts only on your device and lets you export them. When submissions open, each report will be checked for personal data, abuse and relevance, and shown as pending, published, rejected or withdrawn. You can request edits or deletion at any time.

Why observations never change the evidence

One garden, one season, no control. Observations are shown in their own area with sample size and context so that readers can weigh them; they do not alter a status, a tier or a planner score. See the methodology.

Abuse

Spam, harassment, deliberate misinformation and commercial promotion are removed. Report abuse through contact.

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