Field Notes

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.

Almost every "the mites didn't work" story traces back to one of nine causes, and most of them were decided before the bottle was opened. Here's each failure mode, the mechanism behind it, and the fingerprint that tells them apart.

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.

Webbing on a plant isn't always spider mites — and the mite that causes the most damage indoors doesn't produce webbing at all. Here's how to tell what you're actually looking at before you treat.

UV gets all the attention, but it's rarely the problem under standard LEDs. The variables that actually determine whether predatory mites thrive in a lit grow space are humidity, heat, and photoperiod — and all three are fixable once you know what to look for.

Broad mites are microscopic pest mites that cause twisted, bronzed new growth on peppers, cannabis, hoyas, and dozens of other plants — and they're almost always misdiagnosed first. No webbing, no visible culprit, just a plant that keeps getting worse while you adjust the pH. Here's what they actually are, how to identify the damage, and how to get rid of them for good.

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.

Released predatory mites but can’t see them anymore? Don’t panic. Their invisibility is exactly what makes them effective. Learn why they vanish, how they hunt pests out of sight, and why reapplying keeps your plants protected.