Field Notes

Thrips species do not all live the same way. Learn why their pupation sites and responses to predators can change your treatment plan.

Why a living swirskii mite is not the same as a growing colony, and how to interpret cool conditions around your plants.

A pollen-fed Amblyseius swirskii kills 34–60% fewer pests than a hungry one. Whitefly control improved anyway, because there were five times as many mites. That trade decides one thing for you immediately: if your pest is thrips, pollen is the wrong food, because thrips eat it too.

In a zucchini greenhouse, swirskii alone finished the season at 12.27 whiteflies per leaf against 41.97 for twice-weekly conventional spraying. The same trial measured virus, and there the spray programme was the one that lost less — so a density reduction and a disease reduction are two different purchases, and the bottle only buys the first.

How to distinguish a living sachet colony from useful delivery onto plants, and what to observe without opening the packet.

Trace an unsuccessful swirskii release from pest trends through delivery, conditions, and treatment coverage before repeating it.

A connected troubleshooting path from live thrips counts to coverage, conditions, prey stages, and a better repeat-treatment plan.

Why sheltered placement and plant coverage affect cucumeris sachets, and how to use those lessons in a prevention program.

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.

Soil mites are sold by the thousand and applied by the tablespoon, which makes it hard to know whether you've used enough. Here's where the numbers come from, how they convert into pots, and what the first month should look like on a sticky card.