Im not sure why it wont grow... it is the same age as all the other capes you see in the pics... but no worries I have about 70 more growing in the same exact conditions doing just fine!Somehow I doubt the cape has any actual mutation, especially as I see a dewdrop in the pic....they will lose dew due to a number of environmental conditions though, from humidity to soil to temperature to pests.......
Also, you can still feed it. Like any plant liquid fertilizers can be taken up by the leaves, and once it gets growing you can confirm or deny whether or not it actually has a dew issue or if there is an environmental issue....