I label mine initially based on the "seedpod parents" this makes it easy for me to identify the "female parents" regardless of which "male parents" cross pollinated them. Since I have 65 seedlings I keep track by using the labeler sticker with the name of the seedpod parent. It will be a couple years or so before I expect to see any blooms from these.
The hybridizers can track both parents because they do "manual cross pollination" or "hand pollination" and nurture the seedpods in a controlled environment. This way, they have better success in making unique plants.
