Tropicals & Tender Perennials: best way to combat spider mites?, 1 by Alistair

Alistair wrote:
This is a shade-house Brug plant about a month after predatory mites were released. They take a little while to multiply, but you can (I hope) see the difference between the 'bleached' older leaves which had heavy infestation and the new growth which is perfectl;y healthy. These plants had NOT been sprayed with anything. This is one of hundreds of plants of several cvs all reacting the same way.

I also released mites into field-grown plants which were so heavily infested that mites were forming seething balls on the leaf tips. These plants are now at acceptable levels of infestation (i.e. hardly detectable). I did cut off most of the leaves of the very heavily infested plants before releasing the mites.