There's a cut flower grower somewhat near to us in Watsonville that is/was growing it. When I was hunting it down a couple of years ago, the florist told me where it was being grown. A friend of mine knows the grower and went over there pleading my case, but they were unwilling to give up a plant. I'm going to check with my friend to see if he can get some cuttings this year. I no longer see it on the Kordes website, but 2 years ago, I would have needed to import a very large number of plants to be able to get it. I can't remember exactly, but it may have only been available to the wholesale trade.
Yes, I understood that the variation in spelling was a translation. I remember that it was frustrating searching under the translated spelling until I found the German spelling.