Field Notes

Most ladybugs you'll encounter are red with black dots — and that description fits native, introduced, and invasive species equally. Here's how to actually tell them apart, what the harlequin ladybug has been doing to native populations, and where the real ecological concerns are.

The larvae of Cryptolaemus montrouzieri look so much like mealybugs that growers routinely try to wipe them off their plants. That's the beetle they just released, eating the pest they paid to eliminate. Here's how to tell them apart — and everything else you need to know before you release the most effective biological mealybug control in existence.

You released the predatory mites three days ago and the spider mites are still there. The nematodes went in a week ago and the fungus gnats are still flying. This is the moment most growers reach for a spray — and it's usually the wrong move, because the beneficials have already started. Here's what's actually happening after a release, and how to read the signs that it's working.

Spraying whiteflies knocks back the adults you can see. It doesn't touch the eggs. The eggs hatch, the nymphs are harder to kill, and three weeks later you're back where you started — except the population is slightly more resistant. Here's how predatory mites and Orius break that cycle by targeting the stages your spray misses.

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.

They do fly away, and not because your plant disappointed them. Most are gone inside 48 hours whether or not there are aphids left to eat. That is worth understanding before you decide whether it makes them worth buying.

Why Orius can prey on adult thrips, how that differs from larval predation, and what flowers and plant inspections reveal about biological control.