I actually disagree. Both it and its mutation parent like... melt here. Literally, it spots so badly that it looks like the foliage is melting off of it. It looks... really bad :[ It begins in May and is over by the end of June. Our weather is essentially the exact opposite of where it is native.
Mar 2011 Austrian Copper is sold in NorCAL in Half Moon Bay at Pastorini's Nursery on the south side of highway <92> when heading west toward the ocean. It appears rangey & thorny, definitely a 'wild austrian' look to it; But it did have blooms on it that sunny September day in 2010.
"Austrian Copper - R. foetida bicolor - Grows to 7 feet, reasonably hardy. Single bright orange, very startling. Most people love it, but I think it swears at everything else, and should be planted by itself. Blooms once, sets seed. I have seen no black spot." Walter Schowalter - Alberta, Canada notes 1985