Skrapi

What exactly is LST

21 posts in this topic

I have heard about LST and that it is a grow technique, but i don't know how it is done and why. I would really like to hear from anybody willing to shed some light on the LST grow style.

1 person likes this

Share this post


Link to post
Share on other sites

LST, short for low stress training, is a technique used to keep plants at a low height and to fill out the canopy. It can be used indoors or out.

Auxin is a growth hormone produced by the growing tip that inhibits the growth of side branches. A common way of stopping its production is to cut off the top of the growing tip, Then the side branches, now uninhibited, grow in a rosette around the cut tip.

LST inhibits auxin production by bending the main branch, including the growing tip, so it is in a sideways position. As it continues to grow it is trained to continue horizontal growth. The side branches exhibit gravitropism; they orient themselves based on gravity. Since the stem is horizontal the branches start growing vertically. Each branch becomes a vertical stem.

Keeping the main stem horizontal saves a lot of vertical space so it is convenient to use when it is at a premium. This is not its only advantage. It is an excellent way to grow large plants. Each of the side branches off the main stem becomes the equivalent of a vertical main stem. The single plant can spread out and become much larger than it would have if the main stem had been growing vertically.

There are many ways to keep the stem horizontal. Stakes, screens, and ties are often used. Indoors, the stem is often bent in a spiral within the container to conserve space within the canopy. However, in some circumstances it may be more convenient to keep the stem horizontal and straight. The advantage of that is that the new vertical stems line up in a straight row. Other advantages are that the plant does not grow as tall as it would have untrained, and does not have the stereotypical symmetrical canopy found in both top pruned and unpruned plants.

Outdoors, to grow the largest plant possible, start it early, perhaps under lights indoors. Use supplemental lighting to prevent flowering. Set the light cycle so it breaks up the dark period for a few minutes several times each evening. Give the plant LST so it has a lot of vertical "stems", each ready to produce side branches. Then let it grow out.

A similar technique is grow a plant in a container without pruning its top until it reaches a certain height, then turning it sideways so the main stem is horizontal. The container has to be modified so the roots can be watered from the new top and drained from the new bottom. The new side, which was the open top, must be sealed. The branches that were growing sideways will reorient themselves vertically and grow their own side branches.

http://www.cannabis....ary/5879-ask-ed

2 people like this

Share this post


Link to post
Share on other sites

Ok cool thanks for the info mopman. That really helped and it looks pretty interesting but i think i'll shelve the technique until i have a few grows behind me.

1 person likes this

Share this post


Link to post
Share on other sites

Think Mopman said it all very nicely :)

You'll find a few LST grows on the forum in the grow journal if you have a little time to check them ;)

Have a good grow man and good luck if you try LST ;)

Share this post


Link to post
Share on other sites

im doing some autos as a side project would this method be ok for them or stress them 2 much ?. thanks guy

Share this post


Link to post
Share on other sites

well some people do it on autos too, personally, i don't like too touch to autos too much, it will work and porbably do them nothing wrong, but will probably slow them too for some days

Try it on 1 and see how the result goes compare to others and keep us updated ;)

Share this post


Link to post
Share on other sites

yea no problem man i will try and get some pics up when they further on as they only at day 10 but they seem pretty healthy. thanks

1 person likes this

Share this post


Link to post
Share on other sites

lst is perfect for autos and any other strains - it is must-do in your garden - using LST i harvested about 75g from autoblueberry f1 from DP outdoors which is, for me and our cold climate, amazing result

but remember that autos dont forgive mistakes in veg cycle

Share this post


Link to post
Share on other sites

Get her on the knees man, thats lst for me. lol

2 people like this

Share this post


Link to post
Share on other sites

esta bueno el LST, aprovecha mas la luz la planta y tenes asi mismo mejores resultados. a mi me funciono de 10

Share this post


Link to post
Share on other sites

Right now i've got an "alaskan ice" under LST. I use LST only in my little old 'n mainly unused HomeBox. It is perfekt to save space. I've got also the feeling, that the LST increase the amount of herb per plant when you harvest. But i didn't proof it under scientific circumstances. Wish you a good result when you dicide to try a LST grow. Feel free to contact me personally when you've got a question about LST. I've got a technic, that allows to morph the Plant in every phase of the grow. So you can adjust the height of every branch. I think that that increase the exploitable light for the plans...

Share this post


Link to post
Share on other sites

Hahaha u are in very good mood today. :D

1 person likes this

Share this post


Link to post
Share on other sites

It's so awesome cause you encrease the usable Light. I love it too! But My actual grow are Automatics and with that genetics it's hard to train them well. You got no time...

Share this post


Link to post
Share on other sites

All autos i see most of time are lst since to increase yeld, and they very fast tie down, just do this when they need water they more flexible like russian ballet dancers.

Share this post


Link to post
Share on other sites

So LST, FIM and supercropping are all the same.....

You can say, the same in final result?

Share this post


Link to post
Share on other sites

Nope and yes, lst dont give so much stress to plants when fim and sc do but all is about height control and incrase yeld.

1 person likes this

Share this post


Link to post
Share on other sites

That are all completly different technics. You harvest weed, but the plant looks different. And with this modify shape of the plant you reach different goals...

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now

About us

Strain Hunters is a series of documentaries aimed at informing the general public about the quest for the preservation of the cannabis plant in the form of particularly vulnerable landraces originating in the poorest areas of the planet.

Cannabis, one of the most ancient plants known to man, used in every civilisation all over the world for medicinal and recreational purposes, is facing a very real threat of extinction. One day these plants could be helpful in developing better medications for the sick and the suffering. We feel it is our duty to preserve as many cannabis landraces in our genetic database, and by breeding them into other well-studied medicinal strains for the sole purpose of scientific research.

Social Network

Add us on social networks