Cannabis trichomes

Description of cannabis trichomes

Trichomes are tiny, hair-like structures found on the surface of the cannabis plant, particularly on the flowers, leaves, and stems. These microscopic glands are responsible for the production and storage of the main chemical compounds in cannabis, including cannabinoids, terpenes, and flavonoids.

Types of trichomes

There are three main types of trichomes on cannabis plants:

  1. Bulbous trichomes :
    • Smallest type of trichomoniasis, about 10-15 micrometers in size.
    • Occurrence: Distributed throughout the entire plant.
    • Function: Produce small amounts of cannabinoids and terpenes.
  2. Head-like sessile trichomes :
    • Larger than bulbous trichomes, but without any noticeable stalks.
    • Occurrence: Mainly on the leaves.
    • Function: Produces a moderate amount of cannabinoids and terpenes.
  3. Head-like stalked trichomes :
    • Largest and most important trichomogen for cannabinoid production.
    • Consist of a head and a stalk, totaling about 50-100 micrometers in size.
    • Occurrence: Mainly on the flowers and sugar leaves (small leaves near the flowers).
    • Function: Main producers of cannabinoids and terpenes.

Effect of trichomes

Trichomes are responsible for the production and storage of the most important bioactive compounds in cannabis. These compounds include:

Cannabinoids

  • THC (Tetrahydrocannabinol) : The primary psychoactive cannabinoid in cannabis, which produces the characteristic "high" effect. It also has medicinal properties, such as pain relief and appetite stimulation.
  • CBD (Cannabidiol) : A non-psychoactive cannabinoid known for its medicinal benefits, including anti-inflammatory, anxiety relief, and seizure reduction.
  • Other cannabinoids : CBG (cannabigerol), CBN (cannabinol) and many more, each with specific medicinal properties.

Terpenes

Terpenes are aromatic compounds that influence the smell and taste of cannabis. They also have various therapeutic effects:

  • Myrcene : Sedative and relaxing, common in indica-dominant strains.
  • Limonene : Mood-enhancing and stress-reducing, often found in sativa-dominant strains.
  • Caryophyllene : Anti-inflammatory and analgesic, present in many varieties.
  • Pinene : Promotes alertness and memory, has anti-inflammatory properties.

Flavonoids

Flavonoids contribute to the color, taste, and aroma of cannabis and also have health benefits:

  • Quercetin : Antioxidant and anti-inflammatory.
  • Cannflavin A and B : Powerful anti-inflammatory compounds found specifically in cannabis.

Ripening and harvest

Trichome maturity is an important factor in determining the best time to harvest cannabis. Trichomes go through different color phases:

  • Clear : Trichomes are still immature and the cannabinoid concentration is low.
  • Milky/White : Trichomes reach their peak of cannabinoid production, especially THC.
  • Amber : Trichomes begin to degrade and THC is converted into CBN, which has a more sedative effect.

By observing the trichomes under a microscope, growers can determine the optimal time to harvest depending on which effects (psychoactive or medicinal) they prefer.

Conclusion

Trichomes are crucial to the quality and effects of cannabis, as they are the primary production sites for cannabinoids, terpenes, and flavonoids. Understanding trichome development and maturity can help growers maximize their plants' potential and achieve the desired effects.