Spider mites, a need for a solution
I have a big problem with spider mites indoors.
I grow many plants indoors in a conservatory - not just vegetables for food like tomatoes, but also many perennials, tree seedlings, flowers, collection of cactus, etc. I live in an arctic climate, only 3 months frost-free, so growing indoors is essential.
The mites seem to be killing always the same prone species (like moringa, beans, seedlings of honey locust, amaranth, etc) While it's not a problem for many plants, or it's a manageable problem (plants can be rinsed out or sprayed with some sort of control), it is a deadly risk for other species that always die regardless of anything I try to do. The only solution would be to grow those plants in a new room of our house, where mites never have gone.
I keep overwintering some perennials indoors, and since the conservatory with artificial lights and pots is an artificial environment, the mites get out of control. I tried everything against them, but nothing works. Predator mites definitively do not work. Cleaning everything definitively does not work. Introducing pest repelling plants like catnip, does not deter the mites too. Tried neem, essential oils, and did not work. I am tired of trying solutions I found in foruns and on the web, and do not work.
So, while I lost hope of erradicating the mites unless I would start everything from zero (not possible), I now want to learn how to live with the mites and keep them under check so that they do not kill some of my species which are perennials and sometimes rare.
I want to know, how can I create a healthy and balanced environment with my indoor plants. I already have a lot of diversity indoors but the mites kill always the same sensitive species, even if I give them the best of conditions.
Anyone with bright ideas?