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How I perform LST, low stress training, on my Autoflowers: lots of pics!

InTheShed

Member of the Year: 2018 - Member of the Month: Jan 2018, Nov 2018 - Grow Journal of the Month: Aug 2018 - Plant of the Month: Oct 2018
Greetings all! I've had members ask about how I do my LST (low stress training) on my plants so I thought I would do a pictorial on it. My pics are of two different plants but don't let that confuse you. It's just easier to demonstrate that way.

Let's discuss the theory behind LST for a minute. Cannabis plants grow up to the sun. They have a top (apical) cola and side branching. Most of the growth hormones (auxins) go to that apical cola, which is why an untrained plant often has a beautiful huge bud on top and then progressively smaller buds as you head toward the soil. Topping a plant tells the plant that there is no longer an apical cola (damage alert!!!) so it needs to send the auxins to other branches to assure its chances to pass on its genetics. You then end up with two tops from that one.

That's great for photo plants which you can grow as big as you want them to be before you flip them, but autos are on an internal clock. Now many growers top their autos and get great results. I don't. I try to stress autos as little as possible so I do LST.

LST is a method for tricking the plant into thinking it no longer has an apical cola without actually removing it. The method involves pulling the top down flat so that it's not higher than the rest of the plant. The plant still thinks it's lost its apical cola and begins to send the growth hormones to the rest of the branches, but there is no recovery time as there is with topping because nothing has been cut.

As each of the lower branches grows in response, it gets tied down toward the outside of the pot, allowing light and air to get to the rest of the plant, and forcing the plant to continue to evenly spread the auxins.

Let's look at some pics!

I used to start bending the plant when it was much younger. Now I wait until the stem will be close to even with the top edge of the pot after it's bent. This was my Blueberry Auto from last summer.

You can see that I used a rock to hold the stem in place as I bent it. It's important that the base of the stem be upright so you don't put stress on the stem/root connection. Now I use a rock as well as a tie holding the stem in the opposite direction to the bend. This is my current Blue Treacle:

Let's watch the progress of the Blueberry Auto as it goes from the first pic to full buddage!

You can see how I have begun to take the side branching and lay it out flat as well - away from any other growth - using the sticks and twist ties. Flattening each branch forces the plant to spread the auxins equally:

Once the branches outgrow the internal size of the pot, I tie the branches to the edge:

Once they get this far into flower there is no more to be done except watch them grow! I do not untie them until I harvest the plant.

Here is the Blueberry getting close to the end. Can you spot the apical cola? This produced over 4 ounces of dried buds. Not too shabby!

Now let's look at an auto I have currently going into the earliest stages of flower. This one is a Blue Treacle, shown in the second pic with the white wire holding the stem in place opposite the bend. Here is a top view:

And here it is from the side. You can see how flat the top is:

This plant thinks there is no apical cola and is trying its damnedest to develop a new one. Not going to let that happen! I want each cola to be the same size in the end, similar to the last Blueberry pic.

Time for a closer look at the restraints!




My main stem no longer has any room for me to get a pipe cleaner in between the bud sites. No matter! I just grabbed a top fan and tied that down!

And here you can see some of the exposed lower sites that get full light and are close to the same height as the rest of the stem...more hormones!

That's the way I do it. Post questions or comments! :cool:

I'll update this thread when the buds develop and we can see if they're as even as the Blueberry was!
 

moderngroroom

Well-Known Member
Thats what i been waiting for
Thanks for time and hard work of putting that together now i know how it should be done in how often to slowly pull down and not all at once

You mind if i put this on my signature for quick reference?
 

Dutchman1990

Member of the Month: Dec 2018 - Grow Journal of the Month: Apr 2019
Greetings all! I've had members ask about how I do my LST (low stress training) on my plants so I thought I would do a pictorial on it. My pics are of two different plants but don't let that confuse you. It's just easier to demonstrate that way.

Let's discuss the theory behind LST for a minute. Cannabis plants grow up to the sun. They have a top (apical) cola and side branching. Most of the growth hormones (auxins) go to that apical cola, which is why an untrained plant often has a beautiful huge bud on top and then progressively smaller buds as you head toward the soil. Topping a plant tells the plant that there is no longer an apical cola (damage alert!!!) so it needs to send the auxins to other branches to assure its chances to pass on its genetics. You then end up with two tops from that one.

That's great for photo plants which you can grow as big as you want them to be before you flip them, but autos are on an internal clock. Now many growers top their autos and get great results. I don't. I try to stress autos as little as possible so I do LST.

LST is a method for tricking the plant into thinking it no longer has an apical cola without actually removing it. The method involves pulling the top down flat so that it's not higher than the rest of the plant. The plant still thinks it's lost its apical cola and begins to send the growth hormones to the rest of the branches, but there is no recovery time as there is with topping because nothing has been cut.

As each of the lower branches grows in response, it gets tied down toward the outside of the pot, allowing light and air to get to the rest of the plant, and forcing the plant to continue to evenly spread the auxins.

Let's look at some pics!

I used to start bending the plant when it was much younger. Now I wait until the stem will be close to even with the top edge of the pot after it's bent. This was my Blueberry Auto from last summer.

You can see that I used a rock to hold the stem in place as I bent it. It's important that the base of the stem be upright so you don't put stress on the stem/root connection. Now I use a rock as well as a tie holding the stem in the opposite direction to the bend. This is my current Blue Treacle:

Let's watch the progress of the Blueberry Auto as it goes from the first pic to full buddage!

You can see how I have begun to take the side branching and lay it out flat as well - away from any other growth - using the sticks and twist ties. Flattening each branch forces the plant to spread the auxins equally:

Once the branches outgrow the internal size of the pot, I tie the branches to the edge:

Once they get this far into flower there is no more to be done except watch them grow! I do not untie them until I harvest the plant.

Here is the Blueberry getting close to the end. Can you spot the apical cola? This produced over 4 ounces of dried buds. Not too shabby!

Now let's look at an auto I have currently going into the earliest stages of flower. This one is a Blue Treacle, shown in the second pic with the white wire holding the stem in place opposite the bend. Here is a top view:

And here it is from the side. You can see how flat the top is:

This plant thinks there is no apical cola and is trying its damnedest to develop a new one. Not going to let that happen! I want each cola to be the same size in the end, similar to the last Blueberry pic.

Time for a closer look at the restraints!




My main stem no longer has any room for me to get a pipe cleaner in between the bud sites. No matter! I just grabbed a top fan and tied that down!

And here you can see some of the exposed lower sites that get full light and are close to the same height as the rest of the stem...more hormones!

That's the way I do it. Post questions or comments! :cool:

I'll update this thread when the buds develop and we can see if they're as even as the Blueberry was!
Well said Shed and great info ! The blueberry turned out lovely !!
 

InTheShed

Member of the Year: 2018 - Member of the Month: Jan 2018, Nov 2018 - Grow Journal of the Month: Aug 2018 - Plant of the Month: Oct 2018
Thanks for sharing shed great info for noobs buddy . :Namaste::goodjob::Namaste:
Thanks Joe!
:thumb: That is a great share.
Thought it was time! Thanks JM. BTW my cloninator has started working :).
Thats what i been waiting for
Thanks for time and hard work of putting that together now i know how it should be done in how often to slowly pull down and not all at once
You mind if i put this on my signature for quick reference?
Hope it helps MGR! Feel free to put a link in your sig.
REPS REPS REPS!
Nice job, I am going to try this instead of topping my next auto! #remindmethough
:thanks::thanks:
Thanks newty! Ahhhhh...rep points :wistful:

I'll #trytoremember :rolleyes:.
Well said Shed and great info ! The blueberry turned out lovely !!
Sure did! Still have some ;).
:goodjob: InTheShed :thanks:
Always glad to help out with what I know Teddy!

The "Vegetative Cycle" forums seem like a pretty sleepy place! I've added some tags to see if that can drive some traffic. :thumb:
 
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moderngroroom

Well-Known Member
Thanks Joe!

Thought it was time! Thanks JM. BTW my cloninator has started working :).

Hope it helps MGR! Feel free to put a link in your sig.

Thanks newty! Ahhhhh...rep points :wistful:

I'll #trytoremember :rolleyes:.

Sure did! Still have some ;).

Always glad to help out with what I know Teddy!

The "Vegetative Cycle" forums seems like a pretty sleepy place! I've added some tags to see if that can drive some traffic. :thumb:
thanks
 

BigBearNTexas

Well-Known Member
Thanks Shed!

I’ve found that autos can handle most all the tools in the growing toolbox, but picking the right plan for growing can very much depend on the strain. Next time I run a DDA it’s getting this type of training because I found it has a fairly short period of active growth - pretty much zero recovery time for anything else. But an auto that finishes slower, like the last Super Lemon Haze I grew, can handle more aggressive training, like topping _and_ LST. It had about seven or eight weeks of active growth versus the four weeks of my DDA.

Great tutorial!
 

InTheShed

Member of the Year: 2018 - Member of the Month: Jan 2018, Nov 2018 - Grow Journal of the Month: Aug 2018 - Plant of the Month: Oct 2018
Thanks Shed!

I’ve found that autos can handle most all the tools in the growing toolbox, but picking the right plan for growing can very much depend on the strain. Next time I run a DDA it’s getting this type of training because I found it has a fairly short period of active growth - pretty much zero recovery time for anything else. But an auto that finishes slower, like the last Super Lemon Haze I grew, can handle more aggressive training, like topping _and_ LST. It had about seven or eight weeks of active growth versus the four weeks of my DDA.

Great tutorial!
Thanks BB! I've never had an auto strain flower anywhere near that late. 36 days I think was my latest. And that wasn't a fast flower strain. Those all went close to 90 days.
 

Archiweedies

Nug of the Month: Apr 2019

InTheShed

Member of the Year: 2018 - Member of the Month: Jan 2018, Nov 2018 - Grow Journal of the Month: Aug 2018 - Plant of the Month: Oct 2018
First page!!!! Awesome write up Shed. Thanks for taking your time to do this and continuing to make this the best 420 community on the net.:420:
:thanks:
Glad you found it Archiweedies! I'm always looking for tutorials to add to my signature. :)

Just found this over my morning coffee.
Really good right up Shed. Really good, I'll be training my next run of autos, now I know where to come for reference.
Thanks
Morning PD! Always good to find something new before breakfast. Glad I could help!
 

LED209

Well-Known Member
Dang Shed! Those plants lookin good bro! I know its been a minute, just wanted to stop by and say hello and that I started a new journal (I know its been to long)... got a lot of cool new pics from this last summer also! Hope all is well with you, I'm sure ill be hitting you up quite a bit on here and following along on your new adventures! Take care, Heres a link to my new grow journal if you or anyone else is interested.

LED's 2018 Wedding Crasher Indoor Grow and other Adventures!
 
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InTheShed

Member of the Year: 2018 - Member of the Month: Jan 2018, Nov 2018 - Grow Journal of the Month: Aug 2018 - Plant of the Month: Oct 2018
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