the growing tip contains the growth 'enzymes', (not sure if thats the right term) ... anyway, the highest point on the plant contains this growth factor ... cutting off the main tip, lower than the surrounding stems, makes those stems become the highest point of the plant, and then they will ALL form colas ... WARNING: ... too much pruning like this causes stress, and can hermie the plant ... a little is good, a lot is not ... personally, I snip only the main tip ... :smokin: