Mob Farm is no longer being updated.
The code is just too horrible for me to bother with it, but I mean, it works now, but I'm not touching it anymore.
If I do decide to update, the mod will be fully rewritten from the ground up, breaking all compat with current versions.
Tired of being chained to high power costs or high resource costs to spawn mobs at your will? No more of that.
Mob farm allows you to plant crops that when harvested spawn a monster of their respective type. These monsters are normal versions, and are just as strong as usual, with the same drops.
They can even be automated for use as grinders using other mods such as EnderIO. These crops will not be uprooted by soil being turned back into dirt, as to allow for easier automation.
There is one caveat though, they cannot be bonemealed.