Free plant diagnosis — snap a photo, get an answer
Yellowing leaves? Spots? Curling, drooping, burnt tips? Upload a photo and get a specific read in seconds — what it looks like, what most likely caused it, and what to do next. Free, no account, no email.
Free · no account · 3 checks a day · your photo isn't published anywhere.
What the diagnosis looks for
| Symptom | Common causes it distinguishes |
|---|---|
| Yellowing older leaves | Nitrogen deficiency vs natural fade vs overwatering |
| Yellow new growth, green veins | Iron/pH lockout vs magnesium deficiency (older leaves) |
| Brown spots / edge burn | Calcium deficiency vs potassium vs nutrient burn vs splash burn |
| Curling & clawing | Nitrogen toxicity vs heat stress vs wind burn vs root problems |
| Drooping | Overwatering vs underwatering vs root-zone temperature |
| Webbing, stippling, specks | Spider mites vs thrips vs fungus gnat damage |
| White powder on leaves | Powdery mildew vs residue |
FAQ
Is the plant diagnosis really free?
Yes — 3 photo diagnoses per day with no account. Creating a free account unlocks the full grow journal and ongoing coaching that remembers your plant's history.
What problems can it identify?
Nutrient deficiencies (N, P, K, Ca, Mg, Fe), overwatering and underwatering, light burn and light stress, heat stress, pests (spider mites, fungus gnats, thrips, aphids), powdery mildew and other fungal issues, pH lockout symptoms, and environmental problems like low humidity or poor VPD.
What photo works best?
Natural or white light (turn grow lights off or shoot outside the tent), close enough to see the affected leaves clearly, with one wider shot for context. Purple LED light hides the color cues diagnosis depends on.
How does it work?
A vision AI model reads your photo alongside anything you tell it about the plant — stage, watering, feeding, environment — and responds like an experienced grower: what it sees, the most likely cause, and the concrete next step.
Diagnosis is a starting point, not a lab test — the growers who fix problems fastest are the ones with a journal: feedings, readings, and photos over time turn "guess" into "known." That's what Cultivar is for.
Track your own grow free — the journal grades your environment against these bands →
Get the one-page grow reference card
VPD, pH by medium, deficiency symptoms and dry/cure targets on a single printable page. Free — plus the occasional grow-data breakdown. No spam, unsubscribe in one click.