Free Plant Diagnosis Online
Upload a photo of your sick plant and our AI plant doctor identifies the disease, pest, or care problem in seconds. Free, in your browser, no signup. Then get the step-by-step treatment in the PlantlyAI app.
Upload a photo of your plant
A clear shot of the affected leaf or spot works best. 1 free diagnosis.
Diagnosing your plant…
Step-by-step treatment plan
1. Isolate the plant and remove affected leaves with sterilized scissors.
2. Apply an organic, biological, or chemical treatment (your choice)…
3. Adjust watering and airflow to stop it spreading…
Get the full treatment plan in the app
Fix it with PlantlyAI — free, step-by-step treatment for this exact problem.
How to identify a plant disease from a photo
Snap the symptom
Photograph the affected leaf, spot, or pest up close in good light.
Get the diagnosis
The AI names the most likely disease, pest, or care issue in seconds.
Treat it
Open PlantlyAI for the full step-by-step treatment plan for that problem.
Not sure what's wrong yet? Read our guides on overwatered vs underwatered plants and brown spots on leaves.
What our AI plant doctor can diagnose
Most plant problems fall into three groups. The free diagnosis tells you which one you're dealing with and names the most likely cause.
Plant diseases
Fungal and bacterial problems such as leaf spot, septoria leaf spot, powdery mildew, blight, rust, and root rot.
Pests
Sap-suckers and crawlers such as spider mites, mealybugs, scale, aphids, thrips, and fungus gnats.
Care problems
Overwatering or underwatering, sunburn, cold damage, and nutrient deficiencies that cause yellowing, brown tips, or brown spots.
Tips for an accurate plant diagnosis
- Get close to the symptom. Fill most of the frame with the affected leaf or spot rather than the whole plant.
- Use daylight. Soft window light shows true colors; flash and yellow bulbs can hide spots and halos.
- Check the underside. Webbing, white fuzz, and tiny insects often sit under the leaf. Photograph that side if you see them.
- Keep it sharp. Tap to focus and hold still. A blurry photo is the most common reason a diagnosis misses.
Comparing apps? Read our guide to the best free plant disease apps with no subscription.
Free plant diagnosis FAQ
Can I check my plant's health online for free?
Yes. Upload a photo on this page and you get a free plant diagnosis in your browser, with no signup or download. For more diagnoses and the full step-by-step treatment plan, the free PlantlyAI app gives you 2 scans a day.
How do I diagnose what's wrong with my plant?
Start with a close, well-lit photo of the affected leaf, stem, or spot. Upload it here and the AI plant doctor names the most likely disease, pest, or care issue, plus the main symptom it spotted. Then check watering, light, and the undersides of leaves to confirm it.
How do I identify a plant disease from a picture?
Photograph the symptom itself, not the whole room: spots, discoloration, wilting, fuzz, webbing, or insects. The AI compares what it sees against common plant diseases, pests, and care problems and returns the most likely match.
What plants does it work on?
Houseplants, garden flowers, vegetables, herbs, trees, and crops. It covers common problems such as leaf spot, powdery mildew, root rot, blight, spider mites, mealybugs, scale, and watering or nutrient issues.
How accurate is the diagnosis?
It works best on clear, close-up photos of the affected area. No automated tool is perfect, so treat the result as an informed starting point, and confirm serious or spreading problems before you treat.
Is there a free app that diagnoses plant problems?
Yes. PlantlyAI is free to download and gives you 2 plant diagnoses a day with a step-by-step treatment plan (organic, biological, or chemical options). See our guide to the best free plant disease apps for how it compares.