Bill is a dormant tetraploid that grows about 30" tall in my yard. The large 7" blooms are very showy, in addition to being thick and waxy in texture. I love the delicate gold edging on the ruffled petals. It's a large, robust plant that was hybridized in Minnesota by Karol Emmerich and introduced in 2007. If you want a consistent, reliable, late-season performer in Wisconsin, Bill Tonn fills the bill!