Hi John, You picked me up on my comment regarding the flowers of D. imperialis. I should have said that was my opinion based on the plants that I have seen here in the UK, which have had a handfull of flowers on their very tip, of a wishy-washy pinky-white. I'm perfectly willing to accept that they can be much better and, if so, if you ever have any spare seeds.............................! My guess is that my view is pretty much based on plants that only just start to flower before the winter gets them and I'm very willing to accept that they may perform quite differently elsewhere. As foliage plants, I believe them to be very fine. Incidentally, for those of you who like the genus, RHS Wisley mounted a very fine demonstration of most, if not all, of the known species last year, which were provided by one of the Scandinavian universities. I'll try to sort out the photos I took at the time and put them on the WIKI sometime soon. Best regards, David Victor