I'm on a survival server (1.7.2) with the map skyland.

I've decided to create a big place where i can farm the wheat, but at some place, it doesn't grow and stay at the first stade while the other are at the last stade of growing, plus it's very weird because the seed that doesn't grow are in cross (everytime)..

I've attached some screen so you can see what it look like.

Hope you can fix it !