That's a fact...unfortunately the weather was not cooperating at all. In fact two days after I transplanted them to the outside pots temps again dropped to 30F at night and I had to build a tarp tent with a heat lamp inside to save them. The rootbound plants I just soaked the bottoms and gently loosened them up or trimmed some of the circling off.I avoid any rooting supplement in potted unless a week before planting in the garden. That severe root bound means you should have up potted a couple weeks earlier.
I use Radiate and it doesn't take much
All is well so far....