But the cuttings have a pretty decent supply of food in their leaves already.. Typically, a few days in I'll start to see yellowing of the older growth on the cutting.. If environment is right, it will stay vibrant and unwilted, and usually it will selectively cannibalize one leaf to virtually nothing, leaving the rest pretty much alone.. I like this sign personally, its a trustworthy progress marker that you can see without fiddling at all.. And they really don't seem to be lacking anything judging by their healthy growth immediatedly afterwards..