Yes it is supposed to be active. The general point is if you have enough bone meal to be spamming on grass then good for you! Eyamaz made me spam like 2 stacks of bone meal on grass to try to fill his ridiculously large farm >.> *whispers* the farm is over 1000 blocks.....I think he's compensating shhhhhhh
pfft, that isnt even THE farm. get back to work, slacker.