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A real diagnosis, for your plant.

A yellow leaf this morning, on a plant that was fine last week. Twelve search results match the photo, and none of them is looking at your plant. The question was never "what does a yellow leaf mean." It was "what does this yellow leaf mean." The Plant Doctor answers that one: it weighs your plant the way a professional would, names the most likely cause, and tells you how to treat it.

Show it a plant See what comes back

Free in the browser, no account needed for your first scans. Privacy

In the app · from a worried look to a solved problem

A photo, four questionsHalf a minute of your time.
Everything weighed, not matchedYour crop, your week, your readings, the look-alikes.
The name, and the treatmentA full task card: steps, tools, timing.
Followed until resolvedIt checks back until the plant is right again.
A hand examining a yellowing tomato leaf, still on the plant

How the Doctor thinks

Like a doctor, not like a photo search.

Your doctor never names an illness from your face alone. She asks what changed this week, takes your temperature, reads your history, considers the home you live in, holds several possibilities at once and rules them out one by one. Only then does she tell you what it is, and what to do about it.

That is the shape of every answer here.

This is what comes back.

A diagnosis is reached the way a professional reaches one: by weighing everything known about your plant, not by matching a picture. And it does not stop at the name. It ends with the treatment.

When the evidence carries a name:

Tomato · from one photo, checked before you saw it

Most likely: calcium deficiency

Fairly sure
Weighed The photo What you answered The crop and its stage Your system The week that just passed This plant's own history Everything it could be confused with

What it saw

Pale, distorted patches on the newest leaves, tips that brown early, edges beginning to curl. The older leaves still hold their color, and the change arrived over days, not weeks.

What it means

That pattern points at calcium deficiency, fairly sure rather than certain. The strongest clue is where it started: calcium trouble shows on new growth first. Magnesium deficiency looks similar but begins on the older leaves, so it is not fully ruled out yet.

What to do about it

Not a supplement first. In a hydroponic system, calcium usually runs short at the roots because the pH has drifted out of the range where the plant can take it up. Bring the pH back, keep the solution moving, and watch the new growth.

Also possible: magnesium deficiency. Not fully ruled out; it usually starts on the older leaves, and yours began on the new ones. One more photo of a lower leaf sharpens the call.

The plan, from verified treatments, dated onto your calendar

  1. Daily scouting, with pH adjustmentLow risk
  2. Reservoir check and top-up, mid-weekLow risk
  3. Follow-up photo in three days; the case stays open until new growth comes in cleanCheck-back

And when it will not:

Probably downy mildew, possibly its look-alike.
The first step is the same either way.

Family level
An answer you can act on today, without a name the photo cannot support.

Not sure yet. Two conditions look alike from the top of the leaf.

Cannot tell yet
Photograph one leaf, turned over. The underside settles it.

And when nothing is wrong, it says that too, in its own words:

Healthy

Nothing wrong here

"I don't see signs of disease, pests, or stress in this photo. If something specific worried you, a smell, a texture, drooping at certain hours, describe it and I'll take another look."

The right level of detail is the right answer: a more specific guess would simply be wrong. And the final call, in your garden, is always yours.

What you get

Hands gently tilting a healthy basil leaf, still on the plant, to check it
  • The intake a professional would run, in fifteen seconds: part, tempo, recent change, growing medium.
  • 6,054 mapped symptoms, filtered to you: your crop, your stage, your system, this week.
  • One most likely cause with a graded confidence, not a list of everything it could be.
  • The second condition worth ruling out, and how to tell the two apart with your own eyes.
  • Treatment as dated tasks on your calendar, drawn from 446 mapped treatments, with a follow-up check that comes back.
  • An honest "not sure yet" when the evidence is thin, with exactly what it needs to see next.

Why the answer can be this specific

Most photo tools look for the picture that most resembles yours. The Plant Doctor works from mapped agronomic knowledge: which symptoms belong to which conditions, on which crops, at which stage.

6,054
Symptoms mapped
253
Pests & diseases
446
Treatments
100+
Crops

As of October 2026, and growing.

And it does not know everything. When it cannot tell, it tells you that instead.

Questions growers ask

Is there an app that tells you what is wrong with your plant?
Yes. Vegardi, the home food-growing app, includes a tool for exactly this: the Plant Doctor. Photograph the affected part, answer four short questions, and it returns one most likely cause with a graded confidence, the second condition worth ruling out, and what to do today. Vegardi specializes in edible plants grown at home: vegetables, herbs and leafy greens, not houseplants in general. Free in the browser, no account needed for your first scans.
How accurate are plant disease identification apps?
Photo-only tools work by finding the picture that most resembles yours, and that has a hard limit: different causes produce the same picture. The honest measure of any diagnosis tool is whether it tells you how sure it is, and what it does when it is not. The Plant Doctor does not work from the picture alone: it weighs your crop and its stage, what changed this week, your system, and the conditions that look alike, the way a doctor weighs a patient rather than a photograph. It grades every answer, and when the evidence is thin it says so and asks for what it needs to see. The final call, in your garden, is always yours.
Why are my plant's leaves turning yellow?
It is the most asked question in growing, and the hardest to answer in general, because yellowing is a symptom of almost everything: watering, feeding, light, pests and disease can all produce it. What separates the causes is which part is affected, how fast it came on, and what changed recently. That is exactly what the Plant Doctor asks before pointing at a cause. Your leaf is one photo away from a real answer, free, right here.
Am I overwatering or underwatering?
The two look almost identical in a single photo. Texture and tempo usually separate them: underwatered leaves tend to go crisp and curl, overwatered leaves tend to go limp, and the timeline matters. The Doctor weighs those signals for your specific crop, stage and setup, instead of answering for plants in general.
Is the Plant Doctor free?
Free in the browser, no account needed for your first scans. In the app, the free plan includes 5 scans a month and Premium is unlimited.
I grow in soil. Can I use it?
Yes. The intake asks what your plant grows in, and the diagnosis accounts for it. The app's full tracking is built for hydroponic systems today; the soil version is in development, and you can join the waitlist to enter its beta as a Founding Grower.

One app. This is a room in it.

The Plant Doctor is one of fifteen tools inside Vegardi, all working the same garden, so each knows what the others did. Every tool lives in the same app. Premium adds unlimited scans and conversations.

Right here, in the browserThe Doctor and the Garden Check-Up. Free in the browser, no account needed for your first scans.Free
In the app, free plan5 scans a month, alongside the full free toolset.Free
In PremiumUnlimited scans. Currently free for Founding Growers for the first three months.Premium

And it does not work alone. Meet the other fourteen:

What Can I Grow
Ranked for your conditions, honest about what will not work. Planting Map
The garden, slot for slot. A3 is A3. Buy Scan
At the nursery: which seedlings are worth taking home. Seed Starter
The most fragile fortnight, watched closely. Task Cards
Not a reminder. The whole job. Garden Check-Up
A weekly pass, even when everything looks fine. EC and pH
Live targets for your mix, and the dosing math done. Weather Protocols
The forecast, answered with steps for your crops. Harvest Check
When each crop is ready, and how to check. Harvest Log
What the season actually produced. Plant Journal
Every plant's whole story, kept in order. Gardi, your growing mentor
The professional who already knows your garden. Technical Advisor
For the day the equipment is the problem. Learn Hub
Teaches what you are about to need, when you need it.

Scroll sideways for all of them →

Your plant is right there.
So is the answer.

The Plant Doctor runs right here, with nothing to download. Free in the browser, no account needed for your first scans. Show it the leaf that has been worrying you.

Show it a plant See all the tools