There will often be surprises. Only scape size and dormancy/sev/ev are the most likely to be determined ... but even those ... not necessarily. Bloom color, ruffles, patterns, teeth, etc. might be determined by looking at the pedigree of the parents AND their children to get an idea of what genes are dominant. But that is like a poker game. You can never know for certain on the blooms. I like the surprises though so just go for it and see what you might get! That's the best part ... the surprise with the first 1-3 years of blooms! And remember that the blooms often change and don't completely stablize until the 3rd blooming season. Good luck!