Yeah most plants espeacially cfl grows the bottom stalks will have smaller buds most people have their lights setup to focus on the main cola, so when your main top is done the smaller stalk can be matured by simply being able to again lower the lights or by harvesting the done area and throwing the bitch outside. Try to keep as much leaf growth alone if you can as you do your first harvest and your little popcorns will become thrice the size!