In addition to what kmarch says, I use a skewer or a pencil to poke/tamp the medium in between and around the roots. I also use a simlar mix. Remember to soak the medium for a couple of hours before using it. I do use either Superthrive (one drop to a gallon of water) or Dyna-Grow KLN per the directions on the bottle when repotting and for another watering thereafter.