How LST Works
This is where I get to those people who were saying “Topping and LST aren’t even close. You’re full of crap.”
When you top a plant, you are removing the apical bud (the bud closest to the light) where most of the auxin is concentrated and synthesized. The plant stresses itself out (high stress training) and eventually produces new sprouts along the stem that will form new growth so that it can get a new apical bud and send it soaring towards the heavens.
LST is helping to stimulate that growth near the bottom but by tricking the plant instead of chopping it. In nature, if something happens to a plant and the bud that is closest to the light gets blocked, it will try to move around that something. If it can’t, then eventually new growth will form lower along the stem to try and send a new shoot out to head towards the light.
When you LST, the reason that you are tying the tip of the plant down is so that the plant gets confused. It is used to producing the auxins in the tip of the plant close to the light. However, because the tip of the plant is pulled down to such a degree, it is not receiving light at the very tip like it used to so it sends the auxins down the stem to produce new sprouts to become new apical buds (or so the plant hopes).
This is why some people continue training as the plant gets older, but like to start when the plant is new as auxin development starts with roots and continues through all stages of the plant. Continued training of the plant is helpful because, as you can imagine, each apical tip can be brought down to promote new growth further down the stem. Every time you bring the tip down, the plant will be fooled. As new tips of the plant are reaching towards the light, pulling them back down below 90 degrees (or close to it) will make those auxins start to flow again. This can continue on and on.
Now that you know how LST works, you don’t even need a picture to look at. You just know that you need to trick the plant into thinking it’s highest tip is no longer its highest tip. It’s as simple as that, but it is also as complex as you want it to be.