I have owned El Desperado for about 3-4 years now. It consistently blooms around July 15.
It too has been slow to increase, but it may have been a bit stunted because for several years, I planted all of my plants in chicken wire cages dues to big problems with voles. Last fall I removed them all out of the cages and many were root bound in the cages. Hoping that their new found freedom will help with growth.
I have 6-8 El Desperado seedlings that I started this spring.