When: Anytime after the 4th set of ADULT leaves is fully unfolded. Top early for better height control and side shoot production. And no less than 2 weeks before you intend to flower.

How: Pinch off the growing tip.

Why: To increase number of growing tips for cloning or more bud sites. To give a different shape to the plant. To control height. To take advantage of your lights better, especially true when using flouros. To give shoots that may be used in a SCROG setup.
stinkyattic Reviewed by stinkyattic on . When, how and why to "top" your plant Hi I was wondering if anybody had any information on plant "topping".......when you should do it, how you do it, and why you do it? Thank you all in advance for any feedback. Rating: 5