@vnomonee
can you show pics how the prague on taitri looks like right now compared to the one you got from Stan?
really curious to see it in action
I found this regarding hardy citrus (also could work for rootstocks)
https://hardycitrus.blogspot.com/2014/01/cold-hardiness-table_13.htmlI know one guy that talks about swingle citrumelo as a roostock that takes -15C and its fast growing, so thats an option as well, but its still a pain in the ass to get any roostock in my country lol.. maybe I could order some from surrounding countries but its quite expensive in large quantities
Answering your question:
I have one fairly large poncirus that was around 6-7 years old when I bought it 2 years ago, it stood there without leaves for a whole year and now its leafing out, I wonder if its a good idea to graft Prague on it?!