now this is what super-thrive is made for...transplanting! make your solution up according to directions (it's ok to add more s-t tho...i use a 'splash'/gallon) and pour a cup or so into the hole waiting for the plant then a couple more cups after the transplant is done and roots are covered with soil. when moving the plant from pot to pot try to keep rootball in one piece. watering the day before helps this...

don't be intimidated! just follow the rules and handle them carefully and they'll be fine. do it right and they won't even notice...