Advice

Hello im doing my 1st ever grow and growing 2 super lemon haze, which iv vegged for sum time from seed and my plants are taller than 3 foot so decided to flick to flower, my question is that 1 of my plants stants a good half foot taller than the other and the smaller 1 has female pistills all over every node and looking really good but the taller plant has hardly any anywhere so its confusing me a lil, both same strain from seed, germinated and planted at same time ect, any advice thanks