I've been babying it, but I think it's a loss. I recently took it out of the pot to cut off more rot. I may be crazy, but I soaked it in a clorox mix this time and then replanted in a pot, again. I have a few irises and I was told to do that to them when they would get tubular rot and it worked most of the time. I figure it probably can't hurt it at this point.
I use to garden a lot and then my job was taking too much time, so I let the garden go. Now I'm home all the time and back to gardening when I'm not spending time with my grandson's.
At the start of this spring, I tried to recover a 'Palace Purple' (only heuchera I had) from underneath a tree that blew over. It had been growing in the same place for about years. Surprised it was still living, but I took care of that....lol. I dug it up and replanted it and of course it died. I bought two more heuchera's, 'Melting Fire' and 'Plum Pudding' and I think it's over for them now too.
So, I bought two more, 'Stormy Seas' and 'Mocha'. This time I did not put them in the ground. I potted them in nice large pots and they are looking good (knock-on-wood).
In May we had a major flood here and now it's 102 degrees, not heat index, but actual 102.
I think the weather has had something to do with all my plants this year.
Pic of 'Mocha' below. Well, that's my plant stories....lol.