As for choice, it is more a matter of preference than anything else. Both techniques like marijuana topping and fiming are perfect for growing marijuana!
Marijuana Topping
Intersects the upper part of the plant between the nodes on the stem.
Forms two main colas in the upper part of the plant, while LST can be used to create more.
The new cola is evenly spaced (starting from the stem in one place).
Unlike cladding, marijuana topping can be used to reduce plant height during the vegetative phase.
Is more stressful than removal (herbaceous plants take longer to correct the results).
Additional core rods grow at the node where you make the top. Low growth points also start to grow and they can generate even more than the main bet.
Fiming
Opens the beard but does not cut the stem.
Forms 2-4 main colas in the upper part of the plant and through LST it is possible to create even more.
The created new cola is unevenly distributed throughout the bush.
Does not reduce plant height.
It does not cause stress in plants like topping, so the plants recover faster or do not notice it at all.
In any case, whether you use topping and fiming, if you follow the rules, it will certainly make an even more brittle and dense plant that will grow more than one main cola.
DO NOT MAKE A TOP OR FIM TOO SOON
As marijuana topping and fiming, remove some of the growth at the end of the cola from the young plant, causing it to refocus one of the cola remaining potential offshoots to create multi-bud cola instead.
If you cut the plant too soon, it will be extremely difficult to restore it. This may sound like a good idea, but you will get the best results and the fastest recovery if you wait for enough knots to form at the top.
Wait for the plant to have at least 3-5 (fiming) or 4-6 nodes (topping), otherwise training the very young seedling will dramatically slow down growth. If you wait until the plant produces new leaves every day, the recovery will be much faster.
Growers use the plant’s natural response to exercise to produce compact, branched plants that have plenty of stakes. After entering the cannabis flowering stage, the cola fork allows it to make effective use of indoor growing lights as much as possible to achieve high yields.
If you choose to use any of these methods, you are guaranteed to get the best results when you do it on a young plant, usually 3-6 knots.
If desired, you can start training later, during the growing season, but the bush will develop a longer main stem, which will limit the ability to set the cola the way you want it.
ᲛImportant! Never use this technique during the flowering stage! Too late for fiming and marijuana topping! In fact, any training technique involving pruning or other damage to the cannabis should be optimally performed at the plant growth stage before the cannabis flowering stage begins.