Pambi,
Thanks so much for sharing your experiences. It really helps a lot.
K

You're most welcome to anything I've learned... it's all been shared TO me, so it's surely free to all ! :)
I forgot to mention one thing about the bloom colors... you'd stated that your 'yellow' turned out mostly white once opened. Well, MANY (and I do mean MANY.. maybe even MOST ??) brugs will show differences in the bloom colors throughout the growing seasons !! Your plant's showing of blooms in late summer may have been white, but is year's spring 'flush' could very well show up yellow ! I'm serious !! hehe.
This is the reason it CAN take a few years for a brand new hybrid variety to make it out into the marketplace. Those who are seriously breeding these beauties "trial" them for several seasons in order to assess the true character of the plant. Such fun, this experimentation. :)
P