I have had Joseph's Coat for 8 years. I think I purchased it mainly because I thought the flower was unique and different looking. It is very slow growing and I have never had to divide it in 8 years. I also love the veining in the bloom and would love some of the seeds I produced from it to have some of the veining. It is fertile both ways and scapes do not lean, even though I have it partially planted in shade. Maybe it would increase better if it were in full sun.
