Terms of Use

Last updated August 24, 2026

Educational use

Content and tools are provided for home-garden education. They are not agronomic advice for commercial production and not a substitute for local extension guidance, pest diagnosis or plant-safety information. Always consider local conditions and test in a small area first.

No warranty

The site is provided as is. Planting windows, yields and relationships are estimates and syntheses that may be incomplete or wrong; we publish our sources and limits so you can judge them. We accept no liability for crop losses or other damage arising from use of the site.

Licences

Data: CC BY 4.0 (see the dataset page). Text and original graphics: CC BY 4.0 with attribution to Garden Planner. Code: see the repository licence. Third-party sources retain their own rights.

Acceptable use

Do not misrepresent the site's content as endorsements, do not scrape in ways that harm the service, and follow the community guidelines when submitting observations.

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

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