Breeder’s Blend: Premium Predatory Mite Food

You brought in predatory mites to protect your plants. The question nobody answers is what they eat once the pests are gone — or what they eat if you did the smart thing and released them before the thrips arrived. Without food a mite population starves, cannibalises itself, or wanders off. Breeder's Blend is what keeps it on the plant and breeding.

It is the same diet commercial insectaries use to rear mites by the million, in a bag sized for a houseplant collection. Three ingredients, all of them food: cattail (Typha) pollen for high-energy carbohydrate, decapsulated Artemia cysts for the complex proteins and lipids that drive egg-laying, and inactive brewer's yeast for B-vitamins and micronutrients. No corn grit, no bran, no filler — a diversified diet like this can lift predatory mite reproduction by up to 300%.

Feeding takes about thirty seconds a plant. Nothing to mix, nothing to spray, no residue and no re-entry interval — you dip a dry brush, tap it over the nodes and new growth, and leave a barely-visible snow of yellow dust behind. That is the whole method. It turns a plant into somewhere a mite population wants to live, which is the difference between releasing predators once and having them there when you need them.

One judgement call worth making. If you have a heavy, active thrips outbreak right now, pause the feeding until it is under control — you want the mites hungry enough to hunt the thrips first. At low or early pest pressure, keep feeding.

Best for: Holding a generalist predatory mite population between infestations, and building one up ahead of a season. Amblyseius swirskii, Neoseiulus cucumeris, Neoseiulus californicus and Amblyseius montdorensis.
How many: 10g for collections under 50 plants — a windowsill or a cabinet. 25g for 50–200 plants, a large room or a 4x4 tent. 50g for 200 plants and up, greenhouses and propagation spaces.
How to use: A dry artist's or makeup brush. Dip, tap off the excess, and dust the nodes and new growth. Apply once every 10 to 14 days. Do not overdo it — too much food on a leaf can go mouldy.
Arrives as: A sealed foil bag of fine dry powder, sold by weight.
Storage: Keep it refrigerated and it stays fresh for about 12 months; in the freezer, two years or more. Do not leave it sitting in a hot tent or in direct sun.
Safe around: People, pets and plants — the ingredients are food. Contains shellfish: if you have a severe shellfish allergy, wear gloves or have someone else apply it.
Not for: Phytoseiulus persimilis, which is a spider mite specialist and will not touch pollen or cysts. And not a substitute for pest control — this feeds predators, it does not kill anything.