Mountain Laurel leaf formation
 

Noticed that on some mature plants leaves are beginning as singular
blades, adjacent to mature ones. On some other Laurels stalks, which I
presume are leaf buds, are instead forming (they began late last Summer,
probably because of late fertilization). I don't think they are flower
buds..Why are 2 different methods of leaf formation occurring, if in
fact thats the case?

Mitch