Tropicals & Tender Perennials: Mandevilla Question, 1 by rainy_jane

rainy_jane wrote:
I need your advice on what to do now.
I think I figured out why my Mandevilla has died or almost died. I decided to remove it from the pot and repot it with fresh potting soil...and to my surprise, I found it was in double pots.
The inside pot was cut down so that the potting soil covered it and it didn't show. The drain holes were stopped up so that unknown to me, it had been sitting in water.
I found some of the roots had become mushy but only a few of them and the upper part of the roots are still firm.
Do you think if I cut the soft part of the root off and rinsed them with plain water,,,,then repot with fresh potting mix it might stand a chane?
Below is a pic of the roots.