Put on during the flowering stage or right before it, a scrog has a few main functions:
Fold branches out and away from the main stem, like a flower opening up or peeling a banana. Also keep in mind that some strains are sturdier than others and can withstand more bending.
Once the screen is set in place, make sure it’s tight, especially the edges. The tighter it is, the more it will be able to hold shape and hold the weight of developing buds. Zip ties come in handy here.
As a guideline, for a 4’ x 8’ tray, try putting in 18 or 21 plants in 5-gallon pots. That would give you three rows of either six or seven plants and should give you a sense of how many plants will fit together. You can adjust accordingly, based on tray and pot size.
Try to fill each square mesh of the screen with a single branch—avoid putting two branches in one square and try not to leave a square empty. This will ensure that each branch gets enough space and light and that the screen is utilized to its maximum potential. You may not be able to do these depending on how much plant material you have, but they are good guidelines to follow.
You’ll need at least four points of contact to put the screen on. Most growers will use a vertical extension that can withstand some force, like a two-by-four or a T-post, at each edge of the canopy.
Nylon screens come in different mesh sizes, usually 4-6” square. For a smaller grow, try a 4” mesh.
After the screen is on, shimmy it down until it’s on top of the plants. Ideally, you want the screen about 6-9” above the lowest branching of the plants—this is the first topping you gave the plant and the first point at which the plant starts branching, after the stem comes out of the soil.
- Place each corner of the screen on one post at a time, stretching the screen as you go.
- Put the screen on all four contact points somewhat loosely and tighten it down later.
Putting a screen over your flowering cannabis—known as scrogging—will make your plants healthier and more lush. This how-to demystifies the seemingly complicated process.
In hydro, currently, I’m very limited with height, we came up with this method by tossing around ideas to squash the plant down and reduce height and not yield. The resulting yields were just a big benefit.
Question: How long should you spend in the vegetative stage when growing under a Scrog screen?
I’m on run 3 with it and the gram/watt has gone up with each run, can’t wait to see where it tops out. Looking at hopefully 22-24 ounces for those 4 plants this run, that’ll be a personal best for me indoors.
Topping is a cannabis plant training technique that splits a main cola into two.
At this point, your Scrogging duties are over! You just let your beauties finish flowering.
Some of the dried PPP
Now let’s explore how the plant develops if you continue to top past the previous picture
Let your seedling continue to grow until the first set of full leaves have formed (5-leaf in this case).
Answer: It’s not necessary but highly recommended to top. You can top any time during veg but to follow this particular technique, you need to do it as early as possible. You CAN still scrog but you’d probably be better off just growing it out and trying with the next one.
Use the "Screen of Green" technique to create an even cannabis canopy and get bigger yields from your grow lights. This tutorial will show you how…