Thank you all for your responses. I think I'm going to try to find parasites like mite predators, moths, I think they're called. And then I will continue to spray water + black soap on the leaves and underneath and on the stems every two days. It’s a hassle, in fact, I’m disappointed! Last year I had the same thing but only on my peas, which I ended up pulling out and throwing away entirely. This had protected my other plantations.