Transplant problem

I transplanted my plants to early (no root ball) replanted best I could last night there still nice and green 12hours later are they going to be okay there 14 days old I watered with some mychorrize hope that helps

It's hard to know as it's a bit early to tell but I hope all will be okay with them and good luck.

How long until and how will I know?

How big a plant?

They should be fine. I'm on my first grow right now. When I transplanted into 5 gal containers, I swear half the roots broke off (didn't know what I was doing lol). But they still picked up and are growing really nicely. So I think you should be fine.