You must have RUINED SIGN and MUTATED SEED to make ZOMBIE SIGN. ZOMBIE SIGN belongs to category. Less than hour this seed takes to grow. If you brake this all night long you will get some experience points. There is no data about durability. Currently we do not yet have knowledge about the seedratio of ZOMBIE SIGN. Unfortunaltely gemratio information is not available. There is no data about blockratio.