Bukkit/CraftBukkit — pull request #504 by Ashtheking (2011-10-11 22:15:33+00:00)
Title: Implemented BlockGrowEvent

BlockGrowEvent is called by BlockCrops whenever it tries to "grow", aka increase it's metadata value. This Event is implemented such that it will send the old and new metadata values for the devs to modify as they see fit. Useful in cases such as farming plugins, or ones which control the weather.