Field Notes

A thrips passes through six life stages and cucumeris can kill one of them. Second instars do not just survive the attack — they fight it off, and they destroy the predator's eggs on the way past. That single fact explains the lag, the reservoir, and most of the disappointment.

Every supplier prints the same four-column comparison table. We went and read the papers behind each cell. One column rests on unpublished company data, one species has never been trialled against thrips at all, and the humidity row is backwards. Here is that table with the guesses marked.

Your mites are alive. Your thrips are also alive. That combination has twelve documented causes, and what the mites are doing — where they are, what they are sitting next to — narrows it to one or two in about five minutes.

Hang the same sachet on a bench instead of in the canopy and you have bought a different product — one that empties in a week and stops breeding. Where to put them, how many you need, and why nobody in the trade will tell you how many mites are actually in the box.

The soil mite you buy for fungus gnats has been sold under another species' name for fifty years, and it's credited with a prey list the science only partly supports. Here's what it is, what it eats, where it lives in the pot, and which claims on the label survive contact with the studies.

The thrips mite everyone starts with, and the one most likely to end up alive on your plant doing nothing. What it actually eats, the humidity it actually needs, and how to work out whether your room is inside the band or just outside it — before you buy, rather than three weeks after.

That packet of powder contains millions of living nematodes in a state of suspended animation — dried down, refrigerated, and waiting. Here's the biology that makes it possible, how they're produced at scale, and what actually happens in the fifteen minutes after you add water.

Most predatory mites do one thing well. Limonicus hunts thrips, whitefly, and spider mites — and survives on pollen when there's nothing left to kill. Meet biocontrol's most versatile generalist.

Green lacewing eggs are laid on silken stalks — an evolutionary solution to two problems at once. Here's the biology behind the structure, what happens inside the egg as it develops, and how to deploy them effectively against aphids, mealybugs, thrips, and more.

Thrips are one of the most frustrating pests in cultivation — not because they're invincible, but because most treatments target the wrong life stage at the wrong time. Here's the biology, the honest failure analysis, and what a complete program actually looks like.

Not sure how many nematodes you need, or why your last application didn't work? This covers the dose, the timing, the water, the temperature — everything that actually matters.

Thrips are tiny, annoying, and almost impressively destructive. This article takes a closer look at Orius insidiosus—the predator that hunts adult thrips—and explains how to use it as part of a long-term control strategy.