Instatransplant Cups & Pots pictorial and Root Restriction Stunting

I know i am often lacking in space in my setup and I can't fit as many 7" pots in my setup as I want, so if I start a bunch of regular non femmed seeds I simply cannot fit enough pots in my small space. I started using "instatransplant" pots a few seasons ago and had excellent results using the technique. I found that you would get little to no stunting when growing an auto in a 6" pot for 21 days. A few advantages come with an instatransplant pot. First it allows a totally stress free transplant. Extremely low risk of shifting dirt, and no risk of a poorly timed transplant, as the "windows" in the side of the pots allow you to monitor your root development, so a transplant too late or too early is super easy to avoid, by keeping an eye on root development.

This 6" instatransplant pot had an autoultimate growing in it for 21 days and then was transplanted to the outdoors.
IMG_3731.JPG
IMG_3732.JPG


Here she is at the end of her life.
ultimate trunk.JPG
ultimate root 1.JPG


So for this application the instatransplant pots work extremely well!! I started using the instatransplant 16oz cups for a different reason. 2 seasons indoor ago, thanks to the advice of master stunter @arty zan, I was showed the way. With his advice i found that keeping roots restricted in cups for a certain amount of time would root restrict and I would end up with smaller plants.
This is the last thing that most guys would want, except for the few with limited vertical and unable to grow tall plants as a result of their vertically challenged space. For me, it opened up a whole slew of strain options that I would have been previously unable to grow due to height. I also found that cramming in smaller plants and focusing main colas to keep nodes stacked and plants stout(I also believe that close proximity LEDS with IR spectrum play a roll in overall height and node spacing), I was able to increase overall space versus yield ratios, along with getting the benefit of being able to grow 7-8 strains at a time which increases variety immensely!!

How much stunting would i need to do to keep plants in check with my space? There is several factors I needed to take into account. First of all breeders quoted sizes, and also grow journal results are taken into account. If DP's auto night queen is quoted to 36" and i need to have plant at a maximum of 26", then I need to do something, or she will outgrow the space(assuming i do a perfect job growing her out, and the plants genetics are just right for a big lady).
I also keep an eye out on early growth rates as well as root development, and take those into account. If a plant is growing slowly, and after 14 days(especially if into preflower) she is not very large, I will often jump the gun and plant her then, even if she is supposed to be a large(r) strain.
If early plant growth is quick and I feel the plant could reach typical quoted sizes, I use this as a general guideline for plants that preflower at 15-21 days.

1-7 days contained in the 16oz cup = no effect on size
8-11 days contained in the 16oz cup = minimal effect on size
12-16 days contained in the 16oz cup = moderate effect on size
17-21 days contained in the 16oz cup = major effect
22 days+ contained in the 16oz cup = maximum effect, that should only be reserved for the latest preflowering plants or for the largest plants you want to greatly reduce the size.


Making the instatransplant cups is super easy....all you need is an ultra sharp knife like an X-acto blade and some plastic cups.

Step 1: Drilling bottom root access holes
ahh one thing i forgot to do when taking pics for this tutorial. Before you do anything else, it is easiest to drill your bottom holes for easy root access and drainage. I forgot to do this step for the pics, but what i do is put a whole stack up cups together and then i use a drill with a 1/4" drill bit and drill a series of 4 holes in the bottom of the stack of cups. If you have a drill press this task is even easier, but a regular drill will work fine as well. The reason i do this as step one, is because you lose a certain amount of structural integrity once you cut the window out and the cups can buckle. Easier to drill first thing.

Tools of the trade(also need a drill and a 1/4" drill bit not shown in pic), ready for action!! A redneck razor blade and a cup ready to become insta!!
IMG_6415.JPG


Step 2 : Horizontal Cuts
Cut a horizontal cup around an inch wide, at the bottom and top of the cup
IMG_6416.JPG


Step 3: Vertical Cut
Use you blade for a vertical cut. Start at the corner of your horizontal cut
IMG_6419.JPG


Slice down the cup, so the cut meets the corner of your lower vertical cut.
IMG_6420.JPG


Folding back the one side will make the second cut a snap.
IMG_6423.JPG


Repeat the process 4 more times and you will end up with this.....
IMG_6427.JPG


Once you have made a few of these cups, and have full control over your knife you might want to give the banana slot technique a go instead of the 4 slot technique. This might be a bit hard to explain. All I do is start near the top using a vertical cut into the cup, and once you get near the bottom of the cup you can rotate the angle of the blade creating a small circular cut, which when done right will allow you to be cutting vertically back up the cup toward the top, and ready for another small circular cut to finish the "slot". Once you master this technique, speed of making these is vastly increased.

Root restricted for 21 days DP auto Euforia
IMG_5087.JPG


"Not for a Free Weed country or continent, but for a Free Weed World, Unite and Grow, for a Better, Kinder Planet"
912GreenSkell






 
What about using 1L airpots and putting them directly out to soil?
Will roots come out of air holes and the bottom? Or would it be better to remove the plastic when transplanting?

Yes they will work...though there could certainly be some root constriction depending on the diameter of the roots. The problem is the closer to the main stalk you are, the thicker the roots get, and the holes on airpots are only so big.

Dinafem Auto white widow
IMG_5682.JPG
 
Great tutorial and really sweet looking plants man. I'm on my first grow, but that's definitely something I would check out in the future. How does root restriction compare to giving flowering nutes early as a method to keep the plant small in size?
 
Just came back to re-read this tutorial on the insta-transplant pots.
Will be trying for my first time very soon.
Though, I think I got 32 oz = 1 L pots, not the 16 oz "Solo" cups.
Went for colored, rather than clear, as want to avoid light exposure on roots and possible algae.
Still, thinking about it, the ideal may be --
-- clear for the inside pot, so easier to check root development.
-- colored / opaque for the outside pot, to prevent light on the roots.
Now, just need to get some actual soil for when they outgrow the little peat starters.
Have a few days only, I guess...
 
Great tutorial and really sweet looking plants man. I'm on my first grow, but that's definitely something I would check out in the future. How does root restriction compare to giving flowering nutes early as a method to keep the plant small in size?

from my experience, the difference is huge!! Root restriction certainly has a large impact on plant frame size for sure!!
 
New to the forum. Just planted two sprouts into 32oz yogurt containers setup using this insta-transplant method. Believe it's a fantastic idea. Wasn't happy with the seedling bags I'd purchased and was trying to figure out a way to help the roots escape the bag. That's when stumbled onto this thread. Thanks for the idea and will keep you posted on how they do. BTW...this is my first ever grow so, any fails this grow probably won't be the transplant method.
 
New to the forum. Just planted two sprouts into 32oz yogurt containers setup using this insta-transplant method. Believe it's a fantastic idea. Wasn't happy with the seedling bags I'd purchased and was trying to figure out a way to help the roots escape the bag. That's when stumbled onto this thread. Thanks for the idea and will keep you posted on how they do. BTW...this is my first ever grow so, any fails this grow probably won't be the transplant method.

Hey good luck on your first grow!! Feel free to tag in any staff if you need any assistance! (@912GreenSkell)
 
I'm going to give this a go with my regular auto seeds. My goal would be to grow the plants in the instatransplant pots until they show sex with no stunting. I have some square 2 quart pots. Eight fit in a nursery flat so really space efficient however im unsure if they'd be big enough.
 
@G.Leave Wanted to give you a quick update. This being my first time around, had some difficulty in my process. After reading this thread again, not sure where the idea came from but was convinced the bottom of the inner container had to be removed. The first transplant went OK and managed to get her into a new home without too much trouble. The second though was a different story. After cutting the bottom free, went to pick the pot up and didn't have the loose bottom completely supported. Because of the weight of my freshly watered coco mix, the loose bottom folded open and everything slipped right out the bottom of the pot. Instead of trying to slide her back into the pot, she was quickly positioned over the hole in her new pot and planted directly into the coco.

So far no problem with either plant. No droop or color changes. Think next time the inner pot will simply have a fully perforated bottom and I'll not try cutting it away. Hopefully the roots will grow through the perforations.
 

Attachments

  • Cutting Bottom Away Gracey Pot 11-10-2018_1.jpg
    Cutting Bottom Away Gracey Pot 11-10-2018_1.jpg
    79.2 KB · Views: 365
  • Cutting Bottom Away Gracey Pot 11-10-2018_2.jpg
    Cutting Bottom Away Gracey Pot 11-10-2018_2.jpg
    91 KB · Views: 367
This is a great idea, so just to clarify, when you see the roots through the windows etc and it looks like it's time to transplant, you just make a hole in the soil in the new pot and drop the solo cup in?
 

Test

Test
Back
Top