My black sapote (just planted, 3 gallon); The middle of the leaves are yellow (sort of like the "ribs" part, I know I'm not saying it right); It was in a pot for about three weeks or so, and when I transplanted it, the roots were black and looked very wet; I might have been overwatering it too much (next to my dragon fruit plants, so I just spray everything with water); Is this a problem of overwatering or nutrition deficiency? Thanks;