Pinching, pruning, and de-leafing are powerful tools for directing plant growth and ensuring good airflow.
Pinching a plant's main growing tip (apical meristem) will redirect its energy into the lateral production of branches.
Pruning can help bring large vegetative plants under control and re-shape them into less labor intensive plants.
De-leafing helps to ensure good airflow and eliminate microclimates that can encourage disease.
The secret to all of these techniques lies in the timing and the volume of plant mass removed.
Extreme pruning and de-leafing can stall plant growth and negatively affect yields, but when done on time and in the right amount, it will result in a very productive plant.