More LST (Low Stress Training) Techniques for Scrog
One of the blessings of 420 Magazine is the forums, where we can learn from others. When I first came here years ago, I was intrigued by the plant training techniques I found here. It was difficult, however, to find anyone doing exactly what I wanted to do. Most of what I read was, "tuck the branches under the screen." Which is good advice. But it took me awhile to figure out how to make it work. I also found out that some of the tips I got about training were not what I wanted to do.
Here I plan to lay out the techniques I use, and add some caveats about what not to do if you are training to a scrog. Also, please feel free to add any ideas or suggest changes. That's what the forums are for.
Our plants are resilient and can take a lot of abuse, which is good. However, some training techniques don't work in scrog. For example:
- Do NOT tie the branches down with ties under the scrog. If you do, you will stunt the plant's growth considerably, because you are making the plant think it is stopped from growing up. You don't want to do that, because the upward movement of the plant is something you want to encourage, all the while "tucking" the plant under the scrog screen. This growth is essential to the overall scheme, because if the branches stop growing, your training is for naught. Tying branches works with mainlining, but not with a scrog.
- You must control the direction the plants grow in, because space is limited in the tent. If you train early and bend the branches to make them go in the direction you need them to grow in, you will have more success. So don't let the plants do their own thing - you have to train.
My Techniques Explained
When the plants are small, either sprouted from seed or a clone, it is important to begin training them early. For example, while seedlings or clones are sprouting roots, you can bend the branches and encourage them not to adopt the 'Christmas Tree' appearance they want to grow into. Be gentle with the branches, but get them to adopt more of a side growth than upward growth. Here's a clone which have had the branches gently bent down. What I do is to break the inside of the stem so that it droops instead of standing up. Don't overdo the bending, but go ahead and make it pliable. I gently bend the branch back and forth until it looks like the picture below. Do this on young shoots. Not big branches, because these may snap. You don't want that.
Once the plants are potted in their proper medium and placed in a tent for vegging, you continue to bend the branches before they get up to the scrog level, to encourage growth in a more horizontal way than vertical. Illustrated below is an example of early training on plants that have not yet reached the scrog screen:
Once they approach the screen, continue to bend the branches. You want them to fill up the area of the screen, bending the plants just below it, to encourage them to grow horizontally:
Once the scrog screen is full underneath, and no more branches will fit under it, stop the bending and let the plants grow upward. You will have many tops that will grow into colas.
Once tops are up a few inches, and if you are growing photoperiod plants, switch to 12/12. The plants will need defoliating below the screen, as the last picture above shows. This is to encourage growth above the screen and will help the plants grow strong, fat colas with lots of buds.