It takes a mite to beat a mite. Predatory mites are the natural enemy of the two-spotted (spider) mite that plagues gardens in hot, dry weather — and they're one of the most reliable biological controls going.
What they do
They hunt and eat pest two-spotted mites and their eggs, along with thrips. A good population can clear an infestation without a drop of spray.
How to spot them
- Very small, shiny and fast-moving — often orange, tan or red and pear-shaped.
- They move noticeably faster than the sluggish pest mites they're chasing.
- You'll usually need a hand lens to tell friend from foe.
How to attract and keep them: They're even sold commercially to release onto a bad infestation. To keep the wild ones, avoid broad-spectrum sprays (which hit predators harder than pests) and mist in hot, dry spells — pest mites love it hot and dry, their hunters don't. Plant a variety of flowers among your veggies (see our companion planting guide), go easy on sprays that kill the good bugs along with the bad, and leave a shallow dish of water out in hot weather.
Reach for a gentle option and let the predators do the rest, rather than a harsh spray that resets the whole balance. For the full approach, see our guide to managing pests the safe way.
Image: Attelabus, CC BY-SA 4.0, via Wikimedia Commons.
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