u/Grarea2

I have a small garden, it has, what i have now learned, some water figwort.
I want to use my space efficiently. I am wondering if this is a good use of a patch of ground.
I have seen it with wasps on it feeding fro the flowers. I have seen what I thought were caterpillars all over it. All of this is good stuff from a wildlife point of view.

I have been hunting but struggling to find the answer.
I wanted to check that the caterpillars are food for things? Or is that where the benefits of it end? In my head some larvae taste horrible and so dont get predated.

Thanks.