Como LST Autoflower Cannabis Plants | Sonoma seeds (2023)

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Como LST Autoflower Cannabis Plants | Sonoma seeds (6)

Low Stress Training, or commonly known by its abbreviated name “LST”, is an approach to expand the yield measurement of your autoflowering plants. At the same time, the vertical use of space or room height decreases and with it the light yield. After reading these two sentences, you might automatically want to know how to do LST autoflowering because you will get stuck with the result once you do. First, let me explain what LST is; Then we will move on to the part that is all about how to grow autoflowering LST cannabis plants.

Low-stress training means you prepare your autoflowering plants with a minimum of stress. There's also the opposite method to this, which is High Stress Training, which involves pruning or topping your vines. High stress training is not for autoflowering cannabis plants as it can affect the overall growth of the plant. With a high probability of performing the LST method, buds of the highest quality will result with no difference in size or density. You get a significantly high level of grams per plant. Standard autoflowering cannabis plants have a central cola that sits on top and the sub-colas next to it are small because light can penetrate where they are. By following the LST method, your autoflowering cannabis plant can produce more cola than you can harvest, increasing the number of yields you can achieve.

Now let's read and understand what are the most important things to consider when growing LST autoflowering cannabis plants.

How to grow Autoflower LST: The method to get the best autoflowering cannabis plants

The usual cannabis plant gives you a lot of leaves and branches and the principle that is exploited in this is to produce more flowers that do the pollination and it resulted in moreautoflowering seeds. The flowers are not just on the top of the plant, but on every part of it. It lights up evenly under the harsh sunlight as the top bud may not block the sunlight to the other side of the cannabis plant. However, the autoflowering cannabis plant does not have potency in balanced buds. Consequently, it has a large central tail that blocks light from passing through the other parts. And that's why you need to use the low-stress training method, a method where you train the central tail by flattening its crown.

(Video) Cannabis Seed to Harvest Full Time-Lapse 4k

Try to think of a Christmas tree; it has an apical-dominant shape, meaning that the central cola at the top makes it difficult to develop lateral buds when the plant is growing upright. Low stress training doubles the apical dominance to open the way for sunlight into the lateral buds. If the light passes through successfully, the auxins that the flowers contain will bring you high production in yields. Applying the LST method will also bring you denser buds and crowns. Light can easily reach the lower branches, which in turn leads to high yields. When autoflowering marijuana plants aren't well supplied with light, they can experience the inevitable stretch that triggers your grow space.

In order to perform the low stress training method, you will need some equipment that you will need to perform. You may need rubber bands or other rubber bands that can hold your plant's stem better. You can also use some soft wires that when tied to the cannabis plant will not damage the nerves of its branches or any part of it. You'll also need some masking tape or other tape holding the rubber bands or wire you used. You must perform the LST method carefully so as not to harm autoflowering cannabis plants.

If you are unsure whether the location to grow LST autoflowering cannabis plants is indoors or outdoors, don't hesitate as it can be done in both environments; If you do it indoors, you won't have a space problem as it just needs enough space. Doing it outdoors allows you to get natural and direct sunlight and have your unlimited space. There is no specific time when the LST method should be used. Perhaps the best time is when your autoflowering cannabis strain's leaves are beginning to develop. About 10 to 15 cm in the size of the yield you can start with the LST method. The first week after growing your autoflowering cannabis plant can also be the option to start using the method. In addition, you can use it from the beginning of the first week until the last moment of its flowering phase. Start the low stress training method late and you will not be satisfied with the result as it may slack off in your production.

How to grow autoflowering LST cannabis plants doesn't just land on the method mentioned earlier in this article. You can use the well-known Sea of ​​Green or ScrOG method or the Tie Down method. The Screen of Green method, ScrOG, is its abbreviation, which can be performed as one of the LST methods to apply to an autoflowering cannabis plant. A net or screen is very necessary to perform this method. The mesh or trellis supports the plant and tames the developing branches. There are three types of green screen methods, namely full horizontal screen, tilt screen and vertical green screen. Well, you can choose which method you like the most from the three types. The other LST method is the "tie method". As for the name itself, all you need to do is tie the stem of your plant. This method is considered to be the simplest low-stress training method. Again, this strategy will not bother you with any arrangements. For starters, as you will simply be tightening strings.


The low-stress training method is not something you do once and then stop. This method is a must to be done consistently after starting. Therefore, the purpose behind this is that your autoflowering cannabis plant will continue to grow despite its shape. It turns into If this happens you may need to re-tighten and make sure the cap stays level. Screen of Green is also the method you can use when growing autoflowering LST cannabis plants. Without LSTing your autoflowering cannabis plants, be prepared that your expectations for the best yields and production will not always be met.

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(Video) Week 1: How To Germinate Autoflowers

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(Video) How To Low Stress Train (LST) Hemp


How long do I LST my Autoflower? ›

L.S.T should be applied during the first 3-4 weeks of an autoflowering plant's life cycle.

How do you get the best yield from Autoflower seeds? ›

Start autoflowers in their final containers

To max out yield, you should sow seeds directly into their final containers. Alternatively, you can germinate them using the paper towel method (or whatever your preferred germination method may be) and then put them straight into large pots.

Can you LST an Autoflower? ›

The overall yield of your autoflower plant can be increased by using LST, more light will get to the foliage, thus producing more food and resulting in denser buds.

How much yield from autoflowering seeds? ›

Regular autoflowering plants are small, yielding between 10 and 50 grams per plant. You cannot expect a strain with a fast and short flowering time to produce more than 30 grams but super autoflowers can yield 200-300 grams if you give it the perfect environment.

What weeks do Autoflowers stretch? ›

When growing autoflowering seeds, the plant genetics determines when bloom starts and not the grower. Most cannabis strains stretch for around the first 2 weeks of flowering. Some stretchy strains will continue to stretch into the 3rd or even 4th week of bloom. Sativa strains will stretch more than indicas.

How many times should you top an Autoflower? ›

You can top the plant once, or repeatedly, and allow as much time as you wish for the plant to recover and grow. Plants grown from autoflower seeds can be topped, but the high stress training technique will cost your autoflower several days to recover from the process.

How do Autoflowers get big buds? ›

10 tips for bigger autoflower harvests
  1. Pick the right strain. ...
  2. Germinate autos in their final pots. ...
  3. Stick to an 18/6 light schedule. ...
  4. Avoid high-stress training. ...
  5. Try sea of green (SOG) ...
  6. Get the nutrients right. ...
  7. Avoid overwatering. ...
  8. Encourage healthy soil.
Aug 11, 2022

How deep should Autoflower seeds be? ›

Bury the seed about half a cm to 1cm down into the soil, making a hole with a pen or a toothpick and putting the seed inside with the little root facing downwards. Cover it with a bit of soil without compacting it too much and leave it there until the plant begins to grow above the soil.

Should I remove fan leaves on Autoflower? ›

Yes, you should remove fan leaves during the flowering stage using the correct technique. Removing fan leaves will open up light and produce a better air exchange to the lower canopy. It will also ensure that more energy can go to your plant's valuable parts and make for a bigger harvest.

Can Autoflowers go to seed? ›

Pros and cons of growing autoflowers

Simple: One autoflowering plant can produce hundreds of seeds, simplifying the germination process and eliminating the need to purchase more seeds. Flexible: Autoflowering seeds flourish in a variety of climates and environments.

Do Autoflowers need dark? ›

Do autoflowers need a dark cycle? Autoflowers don't necessarily need a dark cycle. You can grow them under an autoflower 24 hour light from seed to harvest. Many people do just that whereas others feel that they get slightly better results with a 20/4 or perhaps 18/6 autoflower light cycle.

Do Autoflowers need nitrogen during flowering? ›

During flowering, cannabis doesn't need much nitrogen, but instead needs more phosphorus (P) and potassium (K). This is why you will usually come across two types of cannabis fertilisers—those for vegging, and those for flowering. The above applies to both autoflowers and photoperiod cannabis.

Does LST increase yield? ›

The main premise behind LST is that you can expose your plant to more light, and thus, create a wider plant that receives light deeper into the canopy. You'll increase yield with bigger colas throughout the plant, and fewer popcorn buds. This leads to an overall increase in yield.

What is the highest yielding autoflower? ›

The highest yielding autoflower is Green Crack . This autoflower produces yields of up to 650g per square meter after only 9 weeks from seed to harvest.

What happens if you top an autoflower? ›

Autoflowering plants can produce a sea of fat buds when topped properly. This helps maximize yields under a grow light. Many growers say you should never top an auto-flowering plant, while others claim they can top their autos without a problem.

Is 14 weeks too long for Autoflower? ›

Some of the heaviest yielding autoflower strains can take up to 15 weeks from seed to harvest.

How tall should autoflower be before flowering? ›

Most reach an average autoflower height of around 50-100cm. The final autoflower size depends on the genetics and the growth conditions which you provide.

What is the quickest autoflower from seed to harvest? ›

Green-O-Matic Auto

With a lightning-quick flowering time of only six weeks indoors and 5–6 weeks outdoors, Green O Matic is regarded as the world's quickest autoflowering marijuana. The quick and long-lasting effects of this marijuana, combined with its mildness, make it a fantastic choice for daytime use.

What increases bud size? ›

Change Nutrients for Each Stage

The bigger the leaf area, the bigger your buds will be. Nitrogen is the nutrient needed most for this green growth. When plants reach their mature size and begin flowering, they need more phosphorus, the nutrient most essential for budding.

How often should you water a flowering stage? ›

Generally, you want to water every 2 or 3 days during Flower and you want to water enough that 10-20% of water comes out from the pot as runoff. You can check your soil moisture by sticking a finger in the pot: if the soil is dry a couple inches down, then it is time to water again.

How do you increase terpenes in an Autoflower? ›

Use supplemental UV lights.

UV light, when used at the right intensity, can be a great way to increase your plants terpene and oil production. Having low levels of UV light introduced to your plant gives it the response of producing more resin and oils so it can shield itself from the slightly harmful UV rays.

How many gallons of soil does an Autoflower need? ›

This is the reason to start your autoflower plants in their end-growing containers. It is best to give your auto-flowers between 4 to 5 gallons(15 to 19 liters) of SoHum Living Soils® premium grow medium so their roots can thrive and will not become root bound, causing unnecessary plant stress.

How far should Autoflower be from light? ›

During the flowering stage LED Grow lights should be located between 16-36 inches from the plant canopy. Moving the grow light closer will increase the light intensity which can maximize photosynthesis.

Should I top my Autoflower? ›

However, it's important to remember that topping is a high-stress technique. If you're going to use it on an autoflowering strain, you'll want to do so very early, and only if you're positive your plant is super healthy. In general, we recommend staying away from topping when growing autoflowering plants.

Do you feed Autoflowers every watering? ›

As your autoflowers get bigger, they need more frequent watering and larger quantities. During the germination and seedling stages, give each plant 3-7 ounces every 4-7 days. During the vegetative stage (when your autoflowers are growing leaves and branches), give each plant 10-20 ounces every 2-4 days.

What happens if you cut all fan leaves off during flowering? ›

It won't have a negative effect on the flowering process — in fact, if you fail to properly prune and/or remove the fan leaves, the flowering process is much more likely to go awry. Once your plant has entered the flowering stage, you'll want to execute another round of defoliation.

Will seeds from an Autoflower be feminized? ›

Plants flower automatically after 2–4 weeks. The average period between planting and harvest is 10 weeks. Autoflowering seeds are also feminized. No need to worry about male plants.

Is 16 8 good for autoflowers? ›

Autoflowering plants do not depend on light cycle changes to begin flowering. Anything from 16/8 to 24/0 lighting schedule works.

How many days do Autoflowers take? ›

How Long Do Autoflowers Take From Seed To Harvest? Autoflowering strains typically move from seed to harvest in 8–10 weeks. However, some varieties can take up to 12 weeks to fully mature.

What is the best lighting for Autoflowers? ›


And since autoflowering plants have short vegetative phases and often grow shorter than photoperiod strains, you'll typically want to give your autos at least 18 hours of light. This allows for robust growth, without overspending on energy.

How long is the seedling stage for Autoflowers? ›

Speed - Autoflowering strains will be ready to harvest in less time than their photoperiod counterparts, usually around 8-10 weeks from seed.

Can you cut fan leaves during flowering on Autoflower? ›

You can remove fan leaves during flowering in much the same way you do during veg. Prune away large leaves that are overshadowing bud sites, as well as dead or dying fan leaves. One thing to keep in mind is that you should prune in intervals, giving at least a couple weeks between each session.

What nutrients do my Autoflowers need? ›

Nutrients for flowering stage (4+ weeks)

Use an NPK ratio of 5-10-10 or similar. Some autoflower nutrients contain more phosphorus (eg. 5-15-10), and these are suitable as well. Of course, if your cannabis nutrients are an all-in-one solution, you may not need to switch up your feeding at all.

When should you give Autoflowers nutrients? ›

Once your autoflower starts really producing bud you should start feeding only blooming nutrients. You should slowly start transitioning from vegetative to flowering nutrients as soon as you see pistils appearing.

Does LST create more colas? ›

Low-Stress Training Creates More Buds

More colas means more flower buds for you to harvest. Another benefit of LST: It allows you to limit the maximum height of your plants, which can be critical in an indoor garden when you're raising plants that may reach more than 7 feet tall.

Is it better to top or LST? ›

Topping is effectively used to obtain multiple, even-sized floral sites, while LST is then used to bring these floral sites to the same height to maximize grow lamp efficiency.

What is the strongest autoflower 2022? ›

Gorilla Cookies are the strongest autoflower seeds in the world, with THC levels reaching up to 27%.

What is the fastest flowering Autoflower? ›

Sweet Gelato Auto is one of the fastest autoflowering strains in the market. It is ready for harvest 7 or 8 weeks after its germination indoors. Outdoors, it will take a bit more than 60 days to generate up to 170 g per plant.

What is the best soil for Autoflowers 2022? ›

Thus, when establishing an autoflower, its best to use a peat-based 'soil-less” medium such as Pro-Mix, with light amendments to bring up its nutritional value. Because to be sure, an autoflower does require water and fuel to grow; but most autoflower strains will always require less inputs than tropical strains.

How do you know if you're overwatering an Autoflower? ›

Overwatering your plants
  1. One primary symptom of overwatering is drooping leaves. ...
  2. Additionally, the rate of growth of overwatered plants will slow down dramatically or may even come to almost a complete halt. ...
  3. Another symptom of overwatering a cannabis plant is yellowing of the leaves.
Feb 8, 2020

What happens if you don't flush Autoflower? ›

You see, during the growing cycle, your plants store excess amounts of nutrients, salts and other compounds. If you don't allow the plants a chance to dispose of these surplus compounds by flushing them before harvest, your final product will be much harsher and more bitter tasting.

Should I use 3 gallon or 5 gallon pots for autoflower? ›

A 5-gallon smart pot will suit most autoflowering plants, although many people get great results even with 3-gallon pots. If you're growing indoors, you may want to place something below the smart pots to absorb the water or you'll end up with a lot of water everywhere.

When should I stop low stress training? ›

LST should continue during early flowering as vegetative growth continues. Maintain a flat, level branch structure. Vegetative growth will eventually stop when the plant is putting most of its energy into flowering. Minimal adjustment is required after this point – apart from keeping shade away from key areas.

How long after LST can I flower? ›

Low-stress training methods, however, represent an ideal way to manipulate autoflowering plants and maximize their yield. Since flowering can begin in as few as two to four weeks in autoflowering cultivars, LST should begin earlier to reap the benefits.

How do I know when my Autoflower is done? ›

At the end of an autoflowers life cycle, the fan leaves will start to turn yellow and die. This means all the resources are being directed to the buds. It takes up to 3 weeks from the start of yellowing until they die.

What are the best training techniques for Autoflowers? ›

The best way to train autoflowers is topping, without a doubt. You can also use another training technique called FIMing. Both techniques are very similar and you can use other techniques along with either topping or FIMing.

How many nodes should I have before flowering? ›

It is recommended that you wait until your plants have at least four nodes before topping them, and most growers recommend topping the plant above the sixth node. Nodes are the part of a plant that connects new stem offshoots with older growth, which can form a branch, a leaf, or in the case of cannabis plants, a bud.

Should I remove fan leaves during flowering? ›

You can remove fan leaves during flowering in much the same way you do during veg. Prune away large leaves that are overshadowing bud sites, as well as dead or dying fan leaves. One thing to keep in mind is that you should prune in intervals, giving at least a couple weeks between each session.

Why are my Autoflowers so short? ›

If you have low temperatures during early growth of an auto you may permanently reduce the ability of your auto to reach it's full potential. Likewise, if you have serious nutrient issues, overwatering, poor lighting etc you will also likely see permanently stunted growth on your autoflower plants.

How long is the flowering stage for Autoflowers? ›

Autoflower cannabis average time from seed to harvest

With 5-6 weeks of vegetative growth and around 9 weeks of bloom it can take 15 weeks or more for a feminised strain to reach harvest.

What should my buds look like at 5 weeks? ›

In week 5 of flowering, you can observe the buds all over your plant becoming thicker. You may also spot new buds growing in new places such as along the main cola. With buds abounding, your cannabis plants will get fatter every day. This is a surefire sign you are in full flowering mode.


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