Do you want to get the most out of growing cannabis plants? Then you should look into topping - a technique that may seem inconspicuous, but delivers remarkable results. Instead of simply letting the plant grow, you make a targeted cut - an intervention that pays off: because this way you develop more side shoots, a more even leaf canopy and a significantly higher yield in the end.
In this article, you will find out when the right time is, how to proceed when pruning and why topping works so well. Not theory, but practice - so that you can grow healthy, strong plants and a harvest to be proud of.
Topping sounds strange at first: you simply cut off the top of the plant - voluntarily. Why? It's simple: you're not only encouraging it to grow in height, but also in width. The result? More main shoots, more light distribution, more yield. While topping provides more yield in the hobby area, professional medical cannabis cultivation is based on precise standards and technology, see also here at our Medical Cannabis Production.
Normally, cannabis grows like a Christmas tree - a central trunk with smaller side branches. The energy flows mainly into the upper tip. When topping, you cut off this dominant tip (the so-called apical node) and the plant suddenly distributes its growth hormones to several new shoots. This is called breaking apical dominance.
This creates two new main branches - both of which develop into strong colas. This ensures a bushier, more compact plant appearance, ideal for indoor or outdoor setups.
Topping changes the natural growth habit - among other things by redistributing growth hormones such as auxins, which play a central role in plant development (more on this in this study).
Admittedly: Topping is a high-stress workout. The plant needs a few days to recover. But if you do it right, you will be rewarded with denser flowers, better light utilization and a higher overall yield.
Timing is everything - even when topping. If you cut too early, you weaken the plant. If you're too late, there's hardly any point. The golden rule: topping in the growth phase, ideally when your plant has formed 5 to 7 leaf nodes and is at least 30 days old. Then it is strong enough to cope well with the stress.
Orientate the cut on the main stem: count the nodes from bottom to top and place the cut 2-3 cm above the last node you want to promote. This creates a "wound" that needs to heal - so only top healthy plants, never sickly ones!
Many growers top once or twice, depending on the variety and available space. Outdoor growers can also tolerate a third topping - indoors you should be more careful not to overstimulate the height.
Important: Give your plant at least a week's rest after pruning before you send it into bloom. Incidentally, autoflowers often react sensitively to topping - restraint or alternatives such as low-stress training are called for here.
Topping is not rocket science - but a sharp, clean cut is a must. Before you start, grab a pair of sterile scissors. Don't forget alcohol for disinfecting - you don't want to risk an infection.
Then to the plant: look for a healthy, strong lady with 5-7 leaf nodes. Count the nodes on the main stem from bottom to top. Now comes the crucial moment: Place the cut about 2-3 cm above a node that has two beautiful side shoots. Cut at a slight angle - this promotes healing.
The following happens after the cut: The plant stops growing upwards and forms two new shoots that will later become colas. Now give it a few days to recover before you continue training.
Pro tip: You can combine topping with low-stress training (LST) - this creates a really nice, even canopy. And if you have experience: Mainlining combines topping and LST to create a particularly efficient technique.
One more tip: keep a close eye on your plant after pruning. It should remain vital. If not, check light, water and nutrients. Topping is stress - but controlled stress with high rewards. This current scientific research also shows how different pruning techniques affect plant physiology and flower formation
.
Topping is one of the most effective ways to get more out of your cannabis plants - more shoots, more light utilization, more yield. And all with a simple cut at the right time. Sure, it takes a bit of courage and finesse - but if you work cleanly and take good care of your plants, you will quickly see the benefits.
Whether in a small indoor tent or outside in the garden: topping gives you back control over plant growth, allowing you to actively influence the shape and yield of your plants