Is anyone growing Den. Karen?

What media have you used for this or simmilar Den.s? Using the RHS site Karens background is:
25% Den. gouldii
25% Den. bigibbum
25% Den. tokai
12.5% Den. taurinum
12.5% Den. discolor
or put another way 75% section Spatulata and 25% sec. Phalaenanthe.
Thanks for any ideas.