Bag Preparation
Make holes into the transplanting bags for drainage. When you perforate the bags, space the holes to make sure that the drainage is not impaired in any part of the medium.
For larger bags, bore the holes beginning from the lower half of the bag downward. The lowest line of holes should be placed at the base of the filled bag. This could be determined by filling the bag enough medium to let it stand. The point which forms the edge of the base is the right place to position the holes equally distanced from each other.