I'm having issues with my Wisteria. It's not the Wisteria that's causing my problem, it's these little bugs that eat the new shoots. They are tiny black bugs that are a quarter the size of a button, and they eat the new shoots. Thankfully, the plant doesn't seem to mind it, but I think these are mites. I'll show a picture soon, but for now what do I do with it? It's a Wisteria that's been there since I've been here, and that's 15 years. It's trained into a bush so I put an old swing inside of it to support it. If it's mites, what do I do with it? Thank you.