Pick two parents. The calculator expands both family trees to their roots and shows what the cross is made of — including which ingredients arrive from both sides (those stack homozygous) and which are only carried on one side (they unlock in an F2 sibling cross).
Breeders: create a free account to add your strains to the registry. New breeders' strains wait for Tyler's approval before they appear. Already a breeder in the library? You're pre-approved — sign up with your breeder name, tell Tyler your account email so he can verify the claim is really you, and from then on your strains post instantly.