I know. But heres why. Since they have the specific farming land for the Trees to grow in, you cannot mick up gralats placed IN farmland OR get horses that are running around. That is the only place ive heard of that happening, but i havent tried in the castle's farmland cause id rather not risk any money. So 1 pointer, do NOT lay gralats in the farmland, OR bring horses into it and get off.
Thats about it
hope it helped..