Which pest is really sitting on your orchid?
From mealybug to spider mite: photograph the affected leaf, answer a few short questions and receive a named diagnosis with a stated confidence level.
Photograph orchid now →Sticky leaves, white fluff, fine webbing: and no idea what it is
You water, you mist, you move the pot closer to the window, and the orchid still looks worse every week. Buds drop before they open, leaf undersides feel tacky, and somewhere in the leaf axil sits a small white tuft that was not there in spring. The plant is not dying loudly. It is fading quietly, and that is exactly what makes it hard to react in time.
The trouble is that the usual suspects look alike from a distance. White fluff can be mealybug, but it can also be the waxy cover of a young scale insect or simply mineral residue from hard water. A silvery sheen on the leaf can mean spider mites, thrips damage or old sunburn. Search the web at night and you get five confident answers that contradict each other, and a general chatbot will happily invent a sixth.
So you either do nothing and lose more leaves, or you treat on suspicion. Treating the wrong pest costs time, stresses an already weakened plant and lets the real population keep breeding on the root tips and in the bark of the potting mix, where nobody looks.
What separates mealybug, scale, spider mite and thrips
Mealybugs sit in protected places: leaf axils, under the sheath of an old leaf, between aerial roots. They look like small cotton crumbs, they move slowly, and they leave a sticky coating on which sooty mould can settle. Scale insects are flatter, firmer and often go unnoticed because they resemble a brown blemish on the leaf vein until you push one with a fingernail and it lifts off.
Spider mites work from the leaf underside. The first sign is usually a fine stippling that turns the green dull and greyish, and only later do you see webbing at the leaf edge. Dry, warm indoor air in winter favours them. Thrips leave silvery streaks and dark specks of excrement and often damage flowers before leaves.
Each of these signs can be misread on its own. What helps is the combination: where on the plant, how the surface feels, what the underside shows, what happened in the weeks before. That is exactly the set of questions our check walks you through.
How Dr. Phyto looks at your orchid
Snap a photo of the struggling plant. Dr. Phyto asks a few follow up questions about location, watering, air and recent changes, then names the most likely cause, explains what is actually wrong and builds a step by step treatment plan with dates so you know what to do this week and what to check in ten days.
Every diagnosis comes with a stated confidence level. Nothing is presented as settled fact, and when the evidence is thin you are told that instead of being given false certainty. If a plant is beyond saving, Dr. Phyto says so, because letting a lost plant infest the healthy ones next to it is the more expensive outcome.
The same check serves home growers with a windowsill collection, professional growers under glass, municipalities that need early warning from citizen photos and agronomists who just want a fast second opinion before they commit to a differential diagnosis.
Where the plan stops and the authorities begin
We never name a plant protection product. Approvals differ from country to country, and a product cleared in one member state may be unlawful to use in the next, or lawful only for a different crop, dose or application. For anything involving a spray, check the approval list of your national plant protection authority, talk to an agronomist or ask us directly.
If a suspicion points towards an organism regulated under Implementing Regulation (EU) 2019/2072, the reporting duty applies and cannot be talked around. Do not dispose of, move or sell affected material on your own initiative. Inform the competent national authority first and let them decide on the next steps.
Can I tell mealybug from scale insect in a photo?
Often yes, if the photo is sharp and taken close up in daylight, ideally showing the leaf axil and the leaf underside. Where the image is not enough, the follow up questions add the missing context, and the result is always given with a confidence level rather than as a certainty.
Which product should I spray on my orchid?
We do not name products. Approvals are national and change over time, so a recommendation without an approval check would be a legal problem for you and for us. Consult your national plant protection authority or an agronomist, or ask us directly and we will explain how to find the valid list.
Will my orchid recover after treatment?
That cannot be promised, and we will not pretend otherwise. A plan improves the chances when the cause is identified early and followed consistently. If the crown or the root system is already destroyed, you will be told clearly that the plant is lost and how to protect the rest of your collection.
Does this work for a greenhouse, not just a windowsill?
Yes. The same check is used by professional growers and advisors, where the value lies in a fast named suspicion plus a differential list to rule out, before larger measures are planned with an agronomist.