One of my little uns is ill
Hi folks, I need help. This plants foliage hasn't been right this year and I assumed bugs had been at it or it just needed feeding. However I've just been in the greenhouse and horrors he is covered in black spots. I uprooted it thinking there may be root rot and it looks like I'm correct (I think I am). Where do I go from here. Do I defoliate and cut away all bits of bad root? And then do I need to leave it out of soil for a while?
Thanks folks, I know you will help
Averil. I've put up three pics