What's wrong with my plant?
Yellow leaves have a dozen causes and no single answer. Tick every symptom you can see and the tool ranks the explanations that fit them all, not just the first one.
Free No account Runs in your browser
How it works
Every cause in the table declares the symptoms it produces, with a weight from one to three — fine webbing belongs to spider mites, a smelling soil to root rot. Ticking a symptom adds the weight of each cause that explains it, and the score is compared with what a perfect match would score: adding a symptom nothing explains therefore lowers the confidence, as it should in any differential diagnosis. Pick a plant and each cause links to that plant's page on the subject when it is published, and to the plant's own page otherwise, so the advice is never generic when it does not have to be.