Plumb
D

Cannabis strain database and editorial

CannaConnection

Unknown — Amsterdam-based, no disclosed parent company found

Editorial reviews Free to read Visit CannaConnection ↗

CannaConnection's own strains page acknowledges that staff have not personally tested the strains they rank, while the same pages carry undisclosed affiliate banner ads for the seed banks whose products fill those lists — a combination that makes the rankings untrustworthy as independent guidance.

What it's really for Drive organic search traffic on cannabis strain queries and monetize via seed-bank affiliate commissions and sponsored content

What our grade covers The grade on this page is about Cannabis strain ratings, Top 10 and curated best-strain lists, and grow product mentions, not everything the site does.

Medium Scoring Confidence Mostly sourced, but a detail or two still needs a primary source, so the grade could shift slightly.

Follow the money

Banner ads and sponsored gift guides for seed banks including Royal Queen Seeds and Azarius appear prominently on the same pages as strain rankings and Top 10 lists. The strains page states "Special thanks go to our friends at Azarius" and carries affiliate banner ads for seed banks without disclosing whether ranked strains correspond to commercial partners.

Source →
Operating since
2012 (14 years) · source
What it costs you
Free to read The reviews are free to read.
How they make money
Affiliate commissions and sponsored content from seed banks (Royal Queen Seeds, Zamnesia, Azarius); display advertising on strain and blog pages.
What they do
Publishes a database of 1,500+ cannabis strains with editorial grow guides, Top 10 strain lists, a StrainFinder search tool, and news. Staff write curated "best strains" lists and cultivation content.
What to watch for
Staff openly admit they have not personally tested, grown, or smoked all the strains they rank. Top 10 lists are editorial opinion without disclosed criteria, lab testing, or verified user data. No methodology page found. Author credentials are not published.
Composite score
1.40 / 5.00 → grade D

How the grade was reached

Independence · 30% weight 2 / 5

Does the site take money from the very entities it ranks? Pay-for-placement, vendor-funded data, and affiliate commissions all pull this down. The less the ranking can be bought, the higher the score.

Evidence basis · 30% weight 1 / 5

What is the ranking actually built on? Hands-on testing scores highest, then verified first-hand reviews, then opinion or popularity surveys and self-reported figures, then pay-to-rank, which scores lowest.

Method transparency · 20% weight 1 / 5

Is the methodology published, specific, and reproducible? Can a reader see how a given rank was reached, or is it a black box?

Conflict disclosure · 10% weight 1 / 5

Are commercial relationships, sponsorships, and affiliate arrangements disclosed clearly and near the rankings themselves, rather than buried?

Manipulation resistance · 10% weight 2 / 5

How hard is it to game? Controls against fake reviews, solicited reviews, and vendor gaming raise this; an open box anyone can stuff lowers it.

Evidence

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