Field Notes

Use Californicus bottles for active spider mites and sachets for prevention. Learn placement, repeat-release planning, and how to protect the predators.

Meet Californicus, the predatory mite used against spider mites. Learn how it finds prey, what else it eats, and why staying power has limits.

You released the predators. Your plant still looks terrible. Here’s how to tell whether the spider mites are losing ground—even before the leaves give you anything to celebrate.

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.

Go looking for an OMRI seal on a tube of predatory mites and you will not find one — on ours or on anybody's. The usual explanation is that you cannot certify something alive, and that explanation is wrong. Releasing beneficials is a practice rather than an input, and a practice has nothing in it for anyone to review.