This is the cross I have as well. I got several other seedlings from Little Frog at the same time, as did a friend of mine. Her Arnie is still quite small, but her P. helenae x sib is like a weed, and she had divided it already. My helenae x sib is still just 4 small leaves. Genetics!The cross is OIP0217, Fumi's Delight "Rainbow" x delenatii "Purple Delight"