How Is Cannabis Mainlining Done?


When you plant to grow cannabis in your backyard, it requires you to learn different learning techniques. These training techniques will allow yourself to achieve proper growth and maximize the potential of your weed. Multiple training methods can be applied to different kinds of cannabis strains, but nothing is more effective and efficient than mainlining weed.

Whether you cultivate your cannabis farm in a large area or your backyard, practicing this technique will significantly increase your cultivar overall quality and yield. If you want your cannabis plants to grow abundantly, correctly, and offer massive potential, you’ll have to read down below for you to know what is cannabis mainlining.

What is Cannabis Mainlining? 

One of the most popular techniques when it comes to cannabis cultivation is mainlining. Cannabis mainlining is an excellent way to maximize yield and is an ideal method for growers who have a small space. Also, cannabis mainlining can be categorized into two methods, which are high-stress training and low-stress training. The objective of cannabis mainlining is to modify the chemical properties and plant structure so that when cannabis plants grow, they grow buds abundantly that results in a positive way for all growers.

Mainlining focuses on two methods, it combines low-stress training and topping, by this method, it forces the plant to focus its energy in producing evenly-sized cannabis buds rather than focusing on making a large cola that is surrounded by petite flowers. In layman’s term, the plant’s main stem is cut into two while still young and developing. When cannabis plants are trained this way, it should result in the plant creating more colas or bud sites. As a result, this allows the plant to grow more buds, increasing the plant’s maximum potential to yield more.

Cannabis Mainlining Goal

When cannabis plants grow naturally, they will usually produce just one cola, cannabis plants that grow only one cola lead to only a few bud sites. Fewer colas or bud sites mean you’ll grow lesser buds and expect lesser yields for the foreseeable future. To maximize the plant’s potential, they must alter the plant’s apical dominance so that it can produce several thick and long stems where more colas can grow.

To simply put, the goal of cannabis mainlining is for the cannabis plant to progress two secondary branches coming from the main stem so that it can even grow more tertiary branches. When these secondary and tertiary branches grow, they are the perfect sites for buds to grow and develop.

Benefits of Cannabis Mainlining

When cannabis cultivators learn about cannabis mainlining, they get to enjoy and experience numerous benefits. One particular benefit, as mentioned above, is having greater yields with the same setup. It doubles your yield when plants are trained this way.

Another benefit when it comes to cannabis mainlining is convenience. Once you have mainlined all your cultivars, there’s not much else to do but wait for them to get harvested in a few months, you’ll only need your regular duties such as watering and feeding your plants. Mainlined plants will grow naturally, just like the rest. Colas should produce the same height; thus, you get a good grasp with the canopy. Say goodbye to the days when you worry about having an uneven canopy and how they restrict ventilation in your grow room and other environmental factors that affect the plant’s development.

Since you can regulate the plant’s canopy, you minimize the risk of mold formation within your plants. Molds grow when the area is not adequately ventilated. With great help from the canopy, the air is circulated evenly across your growth and limits the amount of moisture retained within the stems.

Disadvantages of Cannabis Mainlining

Although there are only a few disadvantages when it comes to mainlining, they should be considered seriously.

During the early parts of their vegetative phase, give the plants time to recover from the topping to regain their growth speed and volume. This lengthens the entire growth period to a week or two.

Mainlining cannabis isn’t done for Autoflowering strains. Autoflowering strains flowers very fast. So, the time needed to recover from the topping and shuck is almost half the plant’s life. It is also unnecessary to remove flower sites.

The light should be the key when it comes to the mainline. Lights that are low in wattages such as fluorescents and CFL aren’t sufficient to penetrate hard to reach areas such as the bottom part of the plant. To maximize your yields, get LED light or 150 HPS.

If you plan to grow more than eight colas, consider having at least 75 height is needed from the grow surface to light source. Always consider your space requirements.

How Is Cannabis Mainlining Done

Remember, when you plan to mainline your cannabis plants, it requires precision, and delicate hands to allow for better adjustments of the plant’s development. Note that cannabis mainlining is done during the early stages of the plant’s life where it is still developing stems. When handling stem, exercise precautionary measures as they tend to break off easily.

  • Mainlining is done when the plant matures its 3rd node. The third node should be topped or cut to produce a Y-shaped pattern. After cutting the 3rd node, let the plant rest for a couple of days and get rid of the shrubbery underneath it.
  • When you already have the Y-shaped pattern with two shots, you tie down these shoots parallel to the ground or soil; when they are tied to the ground, they should be looking like a T-pattern. As always, be gentle when handling these stems to avoid snapping them off.
  • After a few days or weeks, you can do it again from the two main shoots, and as a result, you will now have four stems that can produce more colas. Experienced growers can even go up to 16 or more if they are using this type of method. While mainlining to produce 16 stems can be done, it is not highly-advisable as the plant can’t hold too much weight.
  • When it reaches their third week, you should stop topping your cannabis plants to produce more shoots and carry on with their growth cycle. As your plants keep growing, you can train your cannabis plants into growing horizontally and make sure that you monitor them now and then. In this way, you avoid your plants from developing lower branches that are desperate to seek light and air. Once done, ensure that proper ventilation, watering, and nutrition are provided to achieve desirable yields.


When you plan to cultivate cannabis plants, you will encounter different kinds of preparations and methods to produce the yield. That’s why you need to know various techniques, such as mainlining. Growing cannabis is a constant cycle of learning, the more you learn, the more chances that you will have a bountiful harvest.

Lastly, it is an essential reminder that cannabis is done during the early stages of the plant, as they will still develop more. As you get along in your journey of cultivating cannabis, you will master the art of mainlining. Happy growing!

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