In Roots, there's the chapter "Fertility", in which you have to create four different types of hybrid flowers. I did a bit of extra searching, and found that there are in fact, 7 possible hybrids that can be created by pollinating the white pot 3 times (and 3 hybrids for pollinating it 2 times). Here's a diagram I created:
And here are pictures of the 3 other hybrids:
Please tell me if I missed anything. Thanks!