[GWE] "Topping" vs "FIMing"

Published: Sun, 08/27/17

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Issue #280 - Sunday, August 27, 2017 

Dear Fellow Grower, 

In today's issue...  

  • Which training technique works better to increase yields; Topping or FIMing?

  • What are the 7 Most Common Plant Training Mistakes? Since you learned how to top and FIM in today's article, this will build on your knowledge!

  • This weeks Trophy Pic features a beautiful harvest from a ViparSpectra LED grow light!

Nebula Haze & Sirius Fourside (founders of GrowWeedEasy.com)​

"Anyone who has never made a mistake has never tried anything new." 

~Albert Einstein 

 
Cutting Cannabis for Better Structure: Topping & FIMing

Topping and FIMing are two cannabis plant training techniques that involve "pinching" or cutting off some of the top growth. These techniques are designed to give you a free way to achieve better plant shape (to make better use of the available light), create more colas, and achieve bigger yields.

Topping: Cut top of plant between nodes

FIMing: Remove newest growth (but don't cut between nodes)
All plant training techniques are designed to help growers get a more desirable plant shape and bigger yields without changing other aspects of their grow. For example, cannabis plants don't naturally grow in a way that takes full advantage of indoor grow lights - a lot of light is wasted indoors when cannabis plants are allowed to grow naturally without training.

Because of this, cannabis plant training techniques (like topping and fimming) are especially effective at increasing yields in indoor grow setups. Topping and FIMing are very similar to each other in that they create a bushier plant with extra colas, but they do have some differences.

Notice how these plants have many colas instead of just one - this is due to topping and FIMing 
Note: The unfortunate acronym "FIM" stands for "F*ck I Missed," and refers to growers accidentally pinching off top growth instead of fully topping the plant between nodes. FIMing has become known as a technique of its own since it has slightly different results compared to topping (recovery time, number of colas produced in one cut, etc.). 
In the above example, the plant on the left was allowed to grow naturally, which resulted in the classic "Christmas tree" shape that's not very efficient under indoor grow lights. Some strains are naturally bushy, but these long lanky strains often produce terrible yields indoors without training. The plant on the right was topped or fimmed as a seedling. This broke the dominance of the main cola, and the plant started putting out multiple colas.

With both topping and FIMing, the growth tips that become new colas are already present. They just get bigger and become colas because topping and FIMing breaks the symmetry of the plant and exposes these growth tips to light and air. Instead of focusing on just one cola, the plant starts focusing on many growth tips until they become colas.  
Topping & FIMing Involve Removing or Damaging Top Growth. This Reveals Hidden Growth Tips and Signals Plants to Start Putting Energy into Them

By damaging the main stem, topping and FIMing encourage the plant to spend energy growing many colas instead of focusing on just one. 
Lower growth nodes will become new colas once they're exposed to light and air, but they develop much faster when the main cola's dominance is broken by topping or FIMing 
Notice how these growth tips have started developing and rising up after plant is topped or FIMed (the fan leaves have been removed so you can see the new colas and overall structure more easily) 
Your goal is to create enough colas that you can completely fill the area under your grow light!
 
 
Quick Summary: Diagrams 
Remember: Only Top or FIM Plants in the Vegetative Stage!
 
7 Unfortunate Plant Training Mistakes
Bend here, not here

Although plant training can produce impressive results as far as increasing yields, sometimes marijuana growers aren't given the right information. Bad info can cause unfortunate mistakes that hurt your results!

With that in mind, I will cover the 7 most common marijuana plant training mistakes, so you get the yields results you want every time, even if it's your first time!

Look Who's Talking!


I just want you to know how much I appreciate your site and knowledge. I am a new grower and have had so much success from your site! I don't like getting highly involved with a project unless I know what I'm doing, and GWE has helped me immensely! Thank you for all your help!!!!

Aaron
Trophy Picture of the Week!


Grown bag seed using Viparspectra 300w LED! Grown in 2x2x4 tent.

~BudBuddy
 

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Who Runs This Newsletter?
Nebula Haze:

I'll be honest with you, when I first started growing, I struggled. Now, it is my mission to make it easier for new growers to get started as well as help advanced growers get bigger, better yields with less time and money. We are updating and adding articles every single week and our goal is to eventually build a comprehensive growing resource so anyone and everyone can grow if they want to! If we all share the knowledge there's more buds in the world for everyone :)
Learn which seed sources are personally recommended by Nebula Haze
 
Sirius Fourside:

Sirius Fourside is a hobbyist grower who has gained the bulk of his experience growing in water as a medium (deep water culture, bubbleponics).

"Growing cannabis can be a relaxing hobby in and of itself, but it also saves you money and keeps you from having to deal with shady characters. Cannabis is much easier to grow than people give it credit for, and growing in water doesn't increase the difficulty much, if any. But whether you want to grow in water, coco, or a different medium, we'll show you how easy it can be!"
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GrowWeedEasy.com has put together a hand-picked list of all the available seed banks including what type of payment they accept and where they ship in the world!

List of trusted seed sources:
http://www.growweedeasy.com/seeds
 

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