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What Is the Reason That Weed plant is Growing Skinny and Tall

If your weed is grown in the right way, it may be exciting and advantageous in the end. Although growing pot is not an easy thing globally, there are many factors to consider. One specific thing that can happen to weed plants is that they grow tall and skinny.

 However, there are many reasons why marijuana plants grow tall and skinny because it can be the strain of weed itself, leaving them in a vegetative state for too long and problems with light. Light both in terms of distance from plant and the plant is getting actual light. 

So let’s find the causes, issues, and solutions about these marijuana plants. 

Reasons for tall and Skinny Cannabis Plants

If you are a new plant grower, then it can be frustrating when your plants do not grow as you desire. However, there are no specific reasons why plants are growing like this. But consider the following causes to analyze if any particular reasons for this.

  1. Too Much Light Distance 

If the lamp is on height and the plant is looking for a light, then it may result that your plant will grow in height. So it would be best if you hung the lamp lower, and the gap between the lamp and weed plant required to be minimized. Consider the ideal distance; it can damage the leaves if it is too close. 

  1. Plants Are too Close Together

Another reason can be due to SARP (Shade Avoidance Response Phenotype). It is an issue that occurs when a plant is stretching itself to reach the required light that their near plant is blocking. The plants are aware of the surroundings, responding according to that. 

For healthy growing of cannabis, it requires a sufficient amount of light. So place your plant in direct sunlight. 

  1. Light is Not Appropriate 

The plant stretchability is also affected due to the use of improper light. However, the orange and red lights are linked with long, thin stems. Blue light is better for thick stems.

  1. Weak Light Source

Like similar issues to distant lights, week light can cause unnecessary stretching and growth in your plants. Use the appropriate light with more power. The more light it will get, the better it will grow. For instance, if the plant is grown under a 40-watt energy-saving lamp, then your plant will stretch. 

You can pre–grow under appropriate cool – white and warm–white light or under an HPS lamp used for both growth and flowering. 

  1. Long Vegetation Stage

The cannabis plant can quickly become too long and entirely take the space. You can then use drastic methods like super cropping. However, it is better not keep the plants in the vegetation phase for too long. 

What are the Results When Plants Get Too Tall and Skinny?

There are multiple reasons why you should try to fix the problem of tall and skinny plants. If you allow the plants to grow without fixing the root cause, growth problems can increase. 

  1. Weak Stem

The leading issue that tends to arise from the increased tall and skinny marijuana plant is the main stalk because it is too weak to support the whole plant. While in the seedling and vegetative stage, the plant seems droopy and bends due to top-heavy growth. But in the flowering stage, the situation gets worse. The bud growth is too heavy and causes the plant to fall and possibly be damaged in the process.

  1. Bad Weather

The tall and skinny plant can absorb extra heat from the light and release it into the atmosphere, causing a vicious hot cycle. Additionally, the tall plants will prevent optimal airflow and ventilation, increasing the chances of mold and disease.

  1. Nutritional Deficiencies

Another problem is that it can’t properly absorb, process, and natural nutrients to the buds. The taller and skinner plants get the extra effort and nutrients the weed plant will use to stay upright. However, the more energy it will consume, the more nutrients are wasted to remain upright, so the less energy remains for proper growth. 


Here we defined all the causes, problems, and solutions to the issue of the cannabis plant that is growing too tall and skinny. You think that tall weed plant is ideal, but in reality, it can cause many problems. Hence try to avoid all the costs, and if you are late, you are required to find the solutions to continue growing the plant without getting it taller.  

By Jaspreet Singh

Jaspreet Singh is the CEO & Founder of Hemp in India. With Hemp in India, he has taken an initiative to Educate-Cultivate-Elevate the significance of the magical plant ‘Hemp’. Driven with the aim to save mother Earth, he is on a mission to redefine the future of Indian agriculture & create a pathway for sustainable living with the power of wonder crop Hemp.
He is actively involved in educating the benefits of industrial hemp to society and assisting farmers in discovering the best practices of cultivating hemp.

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