Auxin In Cannabis Growing

Auxin In Cannabis Growing

Auxin In Cannabis Growing

Auxin is a type of plant hormone that plays a crucial role in the growth and development of cannabis plants. It is a naturally occurring compound that is synthesized in the apical meristem, which is the growing tip of the plant. Auxin is also present in other parts of the plant, such as the leaves, stems, and roots.

In cannabis plants, auxin is responsible for a number of key functions, including:

Cell elongation:

Auxin stimulates the elongation of cells in the stems and leaves of cannabis plants. This allows the plant to grow taller and develop a stronger structure.

Apical dominance:

Auxin inhibits the growth of lateral shoots, promoting the development of the main stem. This is known as apical dominance, and it helps the plant to grow tall and strong.

Root development:

Auxin is important for the development of the roots of cannabis plants. It stimulates the growth of new roots and helps to increase the surface area of the root system, which allows the plant to absorb more nutrients and water.


Auxin plays a role in the response of cannabis plants to external stimuli such as light and gravity. It can cause the plant to bend or turn in response to these stimuli.


Auxin is involved in the regulation of flowering in cannabis plants. It helps to promote the development of the floral meristem, which is the part of the plant that produces flowers.

There are several different types of auxins, but the most commonly found in cannabis plants is indole-3-acetic acid (IAA). IAA is produced in the apical meristem and is transported throughout the plant via the phloem and xylem.

Auxin levels in cannabis plants can be influenced by a variety of factors, including light, temperature, and stress. For example, high levels of light can cause a decrease in auxin levels, while low temperatures can increase auxin levels. Stress, such as drought or nutrient deficiencies, can also affect auxin levels and plant growth.

In summary, auxin is a crucial hormone in the growth and development of cannabis plants. It plays a key role in cell elongation, apical dominance, root development, tropisms, and flowering. Understanding the role of auxin in cannabis plants can help growers optimise their cultivation practices and improve the yield and quality of their crops.

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