Board Thread:Bug Reports/@comment-25550759-20170506162246/@comment-25101089-20170515230529

This is hardcoded in the stem block's code, unlike wheat-type crops. So it's not as simple as adding them as blocks that melon considers okay to grow on.

Add it to the list of 'things to change with the coremod if/when I can be bothered'. (Because using the coremod is a very tedious and complicated process that may take around an hour of hard concentration even for something seemingly small like this.)