Hello there!
I have read a lot of good stuff on this site, particularly on the subject of grafting which is where I require some advice...
I made a graft of loph to peruvianus last tuesday, following the same steps as people have done on here. (sterilising tools, beveling edges etc) the graft itself appears fine as in it is firmly stuck to the main plant and is suffering no discolouration or black bits.
But....
The main plant has some bits that are going a rather worrying shade of dark green/almost black. When I made the first cuts these areas were a dark green colour and I was just wondering if this was a natural progression in that they are getting darker as they heal.
You guys seem to be well clued up so any help is welcome!
Here is the pic of the offending area, its the best i could do with the camera I've got I'm afraid