Question about container soil
I have some large tubs and half barrels that I planted with greens, mostly, and a few other veggies. I'm taking all the plants out now and I'm wondering if I should use the soil 1) as is, 2) amend it with fresh potting soil or ??, or 3) take it all out and refill containers with new soil. There's a dense network of tiny roots and lots and lots of happy earthworms. I could always add the soil to other places in the yard, but I'd hate to lose all the earthworms. Any advice?