Plant Symptom Chart is a small independent reference for home gardeners. You see yellow leaves, spots, curling or holes; we line up the possible causes for that symptom and show, side by side, what several university Extension services say about each one.
Extension pages are usually organized by pest or by disease. A gardener standing in front of a plant usually knows only the symptom. This site starts from the symptom and points back to the Extension pages, so you can read the full advice there.
What this site is not
It is not a diagnosis service and does not give treatment advice. Plant Symptom Chart is not affiliated with any university or Extension service, and none of them has reviewed or endorsed it. A university appears here only because one of its pages is cited.
There are no ads, no paid or sponsored links and no accounts on this site.
Contact
Corrections and questions: hello@plantsymptomchart.com. See also how we check each line and our privacy page.