Regarding "floppy" White Henryi, although mine always has a tendency to 30 degrees off vertical, it has never been floppy until this season, and the floral part of the stems seem to prefer paralleling the ground. I attribute it to the overabundance of rain. We were under normal by 3 inches at the end of May, and over normal by 2 inches by the end of June. And it hasn't quit. This is the first time I have ever had stalks snap too. Everything is so plump with water, even stamens snap off so crisply, like a shard of ice.
Tracey and Moby, did you find this to be the case last year when you seem to be in constant flood mode?
I lost several crosses I had made when two White Henryi inflorescences broke. Fortunately, they were not too special.