Got back from a long weekend to discover that my girl was growing a root through the bottom of one of the holes of her nursery pot. I transplanted her into her final home, a 7gal fabric pot and gave her about 1/2gal of water mixed with just a 1/4tsp of Grow Big to ward off any transplant shock. When I transplanted her she already had a shockingly developed root system for only 10 days--maybe it was the Superthrive?
So far, she seems to be settling into her new home most happily!