renewing banana 'grove'
about five years ago I planted a row of bananas.(they screen neighbors garage and 2 old cars - which are going to be repaired some day) they have done well, but now the new pups which I have allowed to mature have spead out in all direction, leaving the old stumps, and an empty space, in the center. Some stumps are decomposing and I am filling in the holes with soil. I would like visual effect to stay as a row of screening plants. I would like the pups to fill in the empty space but the plants aren't cooperating. I was thinking of transplanting a pup back into the center, but there is very little soil and I quickly run into viable root mass of the mother plant. Disrupting that doesn't seem like a good idea. Any hints on how to encourage new growth in the center?