The Screen of Green or the SCROG method involves placing a net between the growing lights and the plants. As the cannabis plant grows up towards the screen, the netting trains each branch. The canopy spreads out and multiple bud sites develop instead of just one large bud on top. This creates a large, even canopy of growth that fills out the entire horizontal grow space.
An important factor for a SCROG to be successful is timing. However, different plants will have different reactions to the SCROG. Some will stretch and rapidly fill out while others may not. If the plant isn’t a stretcher, it’s recommended to be left with a couple of extra weeks to fill out the scree during the veg stage.
After two weeks of flowering, the developing plants will be allowed to grow vertically to ensure that fan leaves are pulled downwards to allow as much light as possible to penetrate the bud sites.
Other advantages of SCROG are:
- It’s easy to do
- Can be done with both cuttings and feminized cannabis seeds
- Develops multiple bud sites
This grow journal looks at how SCROG can be used to successfully grow Pacman seeds.
Yield: 33 ounces
Ten plants sprouted from the ground. Here are three plants that can fit in one photo. They were just repotted from their solo cups and into their 1-gallon pots. At this point, the babies are 12 days old. They were all grown organically without nutes and with water only.
Of the ten plants that grew, 4 of them are Pacmans and the others are Blackwaters.
Here are the exact same plants four days later. They’re on Day 16. This grow mix has Dolomite lime in it but this will still be a no nute grow.
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So the girls decided to wake up from their daily 6-hour slumber. The pots were still moist so they don’t need any watering for today but received a little misting to put some moisture on their leaves. Here’s a Blackwater (left) and Pacman (right).
Here are the Pacmans in their permanent pots. There are 6 of them now because 2 more were added for more SCROG experience. They’re in organic soil mix and have received water only. They’re on an 18-6 light schedule with a 600W MH super blue 65,000 lumen, 6500k at 100%. They’ll veg for 2 or 3 more weeks before they’re put under a SCROG. The SCROG will be 30” x 50” with a 2×2 screen.
Check out the size of the fans on these baby girls.
It’s there 2nd week under the MH light. The plants are now around 12 to 14 inches tall, deep green ad healthy. A male plant revealed himself, and was promptly replaced with a newly-germinated bean to replace it. You can see the shorter plant in the back of this photo.
They had a small insect issue but the plants and soil were washed with Nukem (Flying Skull brand). The stuff works wonderfully, kills powdery mildew, molds, and it fully organic.
The Nukem worked in one application so the SCROG was installed today at 18 inches above the plants.
Check out this girl. She’s a 9-leafer and is really showing off.
Today, the plants had their first LST onto the screen. Some of the branches had to be allowed to grow above the screen before the LST was started. The simple solution to that was to pinch the branches and bend them over.
Each got a liter of water. So far, the water-only process seems to be going well, none of the plants have nutrient deficiencies, nor diseases. They are averaging 1 to 2 inches a day of growth.
And here is the 11-leaf Pacman. The leaves measure 10 inches from the stem to the tip.
Decided to tuck everything below the screen. Another male revealed himself and will be replaced by a female Pacman in the morning. So here’s a shot of the new screen training below the screen.
All the other Pacmans are definitely female because the white hairs are visible.
There’s nothing like a new 1000W of MH UltraBlue light blazing at 90,000 lumens over the plants.
The SCROG is coming along beautifully. They are strong, healthy plants, without nute deficiencies, or diseases. All they’ve been receiving is a liter of water every 3 days. Switched the light schedule over to 16/8 and in a few more days, they’ll flip to 14/10. At the end of the week, they will be switched to 12/12.
Check out the health and SCROG success.
And here are the new clones from the Blackwaters.
Just some quick photos. They had to veg for 2 more weeks but they are now 2 weeks into flowering at 12/12 light cycle. The plants had some trouble tolerating the Solistek 1000W HPS so it had to be dialed back to 800 watts. The light was 6 feet above the plants and burned some leaves.
The spread on these two plants in the photo is 6 feet with a total of 80 buds among the plants in the SCROG.
When the plants were placed in flowering, 2 gallons of the soil was mixed with water to create tea. They’ve been fed with this and nothing more.
Here’s the latest update. It’s literally a screen of green with tons of buds. It’s amazing how a water-only diet can do wonders for the plants. When this photo was taken, temperature varies from 68 to 72 degrees Celsius, humidity is at 45 to 55%, with air circulation from above and below being delivered by 12-inch oscillating fans.
Almost harvest time and some of the buds are the size of a Red Bull can!
Here’s a close up of one of the buds. After switching to a 10/14 light cycle four days ago, the bud size has doubled.
- Time your harvest for Perfect Taste
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The grow is completed and the plants were harvested. The grand total was 21.6 ounces from the Blackwaters and 11.4 ounces were harvested from the Pacmans.
Yield: 33 ounces
This grow was made successful by the smart use of the SCROG method and the exclusive use of water. The grower was able to maximize the plants’ potential and none of the many plants suffered any form of nutritional defects or deficiencies. In the end, the plants produced a hefty harvest.
Are you interested in the methods used in this grow journal?