I've smoked leaves at every stage waiting on the plant to mature lol
they will all give you a high, but the younger the leaves, the less high... would not be so bad except the leaves taste really nasty, the earlier they are the worse they taste.
I've also smoked early buds before they could dry out properly (quick oven drying) while you get more high, it still tastes bad... so it is up to your taste buds. if you can smoke the crap, by all means. What else ya gonna do with leaves aside from tossing them in the compost bin or making mediocre hash?
__________________ “The greatest service which can be rendered any country is to add a useful plant to its culture. “ Thomas Jefferson “Make the most of the hemp seed, sow it everywhere.” George Washington |