Phal with bad roots

[alannanoelle]

I have a phal that I've had for a few months now. It has been blooming very nicely. However, all the roots seem to have dried up and/or turned black. There seems to be absolutely no living root system, it is almost just resting on top of the medium and dead roots. Otherwise though, it is doing great - it has two new buds about to bloom, and it is growing a new leaf.

Is there anything I can or should do to encourage new root growth?

Thanks!