fluxing cannabis

What is the Cannabis “Fluxing” Technique?

by Nebula Haze (article created with permission from Light Addict)

I recently joined Instagram and I saw that there are many growers who use an eye-catching cannabis growing technique that’s been named “fluxing.” A little research shows that the fluxing technique was developed by a grower by the name of Light Addict. Here is the original fluxing tutorial from 2014: Light Addict’s Quick Guide to Fluxing (original fluxing guide by the creator).

Light Addict has also published a book on the topic which is more detailed and includes many fluxing tips and tricks, as well as a bonus guide to successful cannabis grafting. This is fluxing!

This grid-like base of a “fluxed” plant will develop into a mass of buds like this!

Light Addict explains the step-by-step process in detail with tons of pictures, so there is no need to re-create the tutorial, but I just wanted to share this technique with growers who may not have heard about it before, and offer a quick overview.

The process is similar to manifolding in that it sets up a plant with a split at the base between two main stems. However, the steps differ after that and the resulting base looks very different!

Fluxing starts with a similar structure to manifolding. This is an example of a plant after the first step of being manifolded.

Fluxing involves spreading the two main stems out, to produce a wide and flat plant with lots of bud sites that are evenly spaced.

Examples of cannabis fluxing (all pictures by Light Addict)

A benefit of fluxing over manifolding is that it gives you complete control over the growth pattern of the plant. Every single site will have equal spacing for light penetration and airflow. Plus, every single limb has the same structure. This can be a great advantage! As Light Addict puts it, “The process is almost symbiotic in veg as you control every facet of its growing.”

The main idea of fluxing is to top the marijuana plant when it is young and r emove extra growth besides two main stems, then s ecure the two main branches down as the plant grows. Further topping is used to create a grid-like manifold where every cola is evenly spaced.

Master “fluxers” often secure plants very low to help keep plants short and tidy, but for new growers, it can be easier to secure your two main stems more loosely and let plant grow relatively naturally after that. This is also a good choice for growing auto-flowering strains, as they have less time to recover in the vegetative stage from extensive topping and training.

However you choose to do fluxing, you gain the ability to create cannabis plants with many colas that are evenly spaced!

Check out Light Addict’s Quick Guide to Fluxing or the official book for detailed instructions including every little tip and trick, as well as a bonus guide to successful cannabis grafting!

To "flux" cannabis means to build a grid-like manifold at the base of the plant. This creates many big colas and can help maximize yields from a grow light!

Extreme Autoflowering Cannabis Training

A lot of people think that autoflowering cannabis strains cannot be trained, and should be left to grow with as little intervention as possible. This is also what we recommend to people with little experience in our “tips for growing autoflowering cannabis seeds” article. In this video, Green75 shows us his grow room and makes a great case for training, topping and defoliating autoflowering varieties. He grows continuously and has different plants at different stages of development, giving us a good overview of what happens to an autoflowering cannabis plant when it is trained this way.

Fluxing Autoflowering Cannabis

In the video you’ll notice some crazy training that starts from a very early stage, this technique is often referred to as fluxing. Fluxing is similar (or the same thing as) mainlining, manifolding and supercropping, depending on who you talk to. Fluxing involves topping a very young cannabis plant and the guiding both grow tips horizontally. This way all the side branches start at the same height and reach around the same size. A common nickname for the result of this style of growing is a SCroG without a net!

Green75’s Autoflowering Cannabis Training

In the second half of the video Green75 explains exactly how he trains his plants. He says he usually tops at the third node, but sometimes already at the second. After that, he removes all side branches and leaves below the topped node. Once the topped node has recovered after a day or two, he carefully bends the two remaining fan leaves down and ties both nodes down horizontally with plastic-coated electrical wire. After a day or two, when the nodes have grown a little, it is time to remove the remaining fan leaves. At the same time, more wires are used to tie down the tips a second time.

This technique focuses on growing the two main tops out horizontally and tying down their side branches in a perpendicular angle. After a few rounds of tying things down with electrical wire, the cannabis plant is ready to be left alone so that it can flower. The training part is over, but the cannabis plant is still defoliated regularly. The idea behind this stressful type of training is that it will prevent an autoflower from flowering until it becomes less stressed. Defoliation often becomes absolutely neccessary because all of the branches are so close together.

(Dis)advantages Of Fluxing / Supercropping

Growing cannabis this way might seem like a lot of risk and a fair amount of hassle, but Green75 swears by it. There are some obvious advantages to this style of growing cannabis, which have worked out very well for him. Fluxing reduces size, evens out the canopy and increases yield.

There are also some obvious cons to this approach, the most important one being the added time per grow. Most growers like autoflowering strains for their fast development and short grow/flower cycles. This approach will usually tack on a few extra weeks before you can harvest, making that aspect less interesting. While this style of training can significantly increase yield, many growers prefer adding another plant or two and finishing two to three weeks faster. You can also argue that this makes the autoflowering aspect redundant because a photoperiod strain would take an equal amount of time.

Would We Flux Autoflowering Cannabis Plants?

Here at Spliff Seeds we love us some good plant training, and fluxing is definitely one of the coolest looking training techniques around. For small, personal grows fluxing, mainlining and similar training techniques usually pay off. If you’re using a single light with only a few plants, evening out a canopy this way will definitely help. You’ll boost your yield and save yourself from trimming a lot of popcorn buds from the lower branches. For larger scale grows however, extensive training might simply be too much work to maintain.

Every grower should try this style of training at least once. Bending and defoliating a cannabis plant in such an extreme manner will definitely give you a better idea of how resilient our favorite plant really is. And while many growers are convinced autoflowering strains shouldn’t be trained at all, Green75 shows us this approach can definitely pay off. Autoflowering strains are usually very durable and will bounce back quicker than many photoperiod strains due to the ruderalis background. Using this technique on autoflowering cannabis strains also comes with a set window before flowering starts, forcing you to keep up the training in early stages. Once you see flowers you should minimize training and avoid high stress training altogether. Growers like Green75 show us what autoflowering cannabis strains are capable of and we are excited to see what the community comes up with next. And of course we wish everyone good luck and a lot of fun growing cannabis!

A lot of people think that autoflowering cannabis strains cannot be trained, and should be left to grow with as little intervention as possible. This is also