bruxupanswered grow question 3 years ago I might avoid topping if you're going 12-12 from seed. Topping is pretty intrusive and an aggressive form of training. The plant will need time to recover from the topping, and it may cause problems if the plant is already thinking its time to flower and focusing all of it's energy on that. I would do LST and tie the plant down instead. Then when new shoots start growing as the plant starts stretching, you can tie those down too to expose more potential bud sites. LST is less stressful on the plant and if it's going into flower right from the start, I would try and have as little interference as possible. If you really want to top, maybe consider extending the light cycle and let the plant veg for a bit until it recovers from the topping. Once the new growths have 2-3 sets of new leaves, switch back to 12-12 and let her rip. Hope this helps. Cheers!