Cannabis Phytohormones: The Plant's Invisible Messengers

When we talk about hemp or CBD, we immediately think of cannabinoids and terpenes. But even before these precious components come into being, the entire life of the plant is orchestrated behind the scenes by a fascinating chemistry: phytohormones.

These plant hormones are true chemical messengers. Produced in microscopic doses, they dictate every stage of cannabis development, from the first spark during germination to the maturity of the trichomes. Let's delve into the plant's biology to understand how these molecules shape exceptional harvests.

The Main Actors: Who Does What in the Plant?

Cannabis uses a complex cocktail of hormones that often work in pairs or in opposition to balance its growth.

1. Auxins: The Architects of Growth

Auxin is the elongation hormone. Produced primarily in the terminal buds (the top of the plant), it descends to the roots. It manages apical dominance — the natural tendency of cannabis to form a large main head. Auxin also stimulates the creation of new roots when cuttings are taken.

2. Cytokinins: Cellular Energy and the Engine of Branches

Produced in the roots, cytokinins move up to the top of the plant to stimulate cell division. They encourage the growth of lateral branches and bushiness. It is the delicate balance between auxins and cytokinins that determines the overall physical structure of the plant.

3. Gibberellins: The Wake-Up and Elongation Signal

These are what trigger the awakening of the seed during germination. Later, gibberellins manage stem growth. Be careful, however: an excess of gibberellins can excessively stretch plants and lead to fragile stems with too much space between nodes.

4. Abscisic Acid (ABA): The Anti-Stress Protector

ABA is the crisis hormone. When the plant lacks water or experiences intense heat, abscisic acid immediately reacts by closing the stomata (the pairs of pores under the leaves). This reduces transpiration and protects the plant from dehydration.

5. Ethylene: The Maturation Signal

In gaseous form, ethylene intervenes late. It plays a key role in senescence (the natural aging of the plant) and flower maturation, while influencing the development of trichomes at the end of the cycle.

How Do Growers Use These Natural Signals?

Understanding phytohormones allows for adapting cultivation practices without ever disrupting the plant's biology.

• Pruning and training (LST/HST): By cutting the main apex (the top head), the downward flow of auxin is temporarily stopped. Cytokinins take over and awaken the secondary buds to create a uniform canopy.
• Cloning: When preparing young plants, the natural accumulation of auxins at the base of the cut signals to the plant that it must produce new roots rather than stems.

Fostering Living Soil for Perfect Hormonal Balance

Synthetic chemicals or artificial hormonal supplements often risk disrupting this precisely tuned system. An overdose can block development or create growth abnormalities.

At Canebiera, we let nature do its work. By nurturing soil life — notably through the work of soil microorganisms — the plant produces its own hormones in the right proportions, at its natural pace. It is this internal harmony that allows for harvesting healthy flowers rich in active compounds.

To appreciate the realization of this botanical balance, discover our selection of Organic CBD Flowers  and exceptional resins.