Leaves, not stalks

How do they know? How do they know I have been giving them the cheaper xiao bai cai instead of the more expensive China caixin? 

When they get the premium vegetable, they chomped everything down, stalks and all. But apparently, to these naughty things, only the leaves of the xiao bai cai is fit for consumption. Hey you two! Even we humans eat the stalks too! 

I put the vegetables there the whole day but nothing, nothing would make them eat the stalks :P Naughty rabbits!