Trichomes are microscopic structures present on the surface of cannabis plants. These small glands contain a sticky resin inside, loaded with cannabinoids and terpenes, the chemical compounds that influence the effects and aromatic profile of cannabis buds.
On the plant, as cannabis flowers mature, their trichomes change color and composition. At the beginning, the trichomes are transparent and glassy and, with time, they become opaque and amber-colored. These changes indicate that the trichomes are reaching the end of their life cycle and may be less potent than when they were younger.
Understanding the different stages of trichome maturation will help you unleash the full potential of your cannabis crop. Identifying the optimal harvest time is essential to obtain the desired results in terms of potency and flavor. Learning to distinguish the different stages of trichome maturity is a key skill for growers.

What are cannabis trichomes and why are they important at harvest time?
Cannabis trichomes are small crystalline-like structures found on the surface of cannabis plants. They contain the plant’s cannabinoids and terpenes, which are the compounds responsible for the aromas of cannabis and its effects.
Trichomes are actually a sophisticated defense mechanism of the plant. The sticky resin of the trichomes physically prevents pests from moving through the plant, and the cannabinoids and terpenes are believed to act as an effective repellent for some insects. The trichome layer also protects the plant and its sensitive tissues against harmful UV rays (1).
These tiny structures not only look amazing, but also play an essential role in the production of the many cannabis strains we know and love.
How to identify the different stages of maturity of trichomes
Observa la coloración de los tricomas
Maduración óptima de los tricomas
En general, los tricomas transparentes o muy claros indican plantas inmaduras con bajo contenido en cannabinoides. Las plantas con cabezas de tricomas de color lechoso están en el pico de madurez y en su máximo esplendor en cuanto a contenido cannabinoide y terpenoide, mientras que los tonos ámbar indican que están empezando a sobremadurar –en este caso, se produce la degradación gradual de tetrahidrocannabinol (THC) a cannabinol (CBN). Te lo contamos detalladamente más abajo.
Cosechar para obtener resultados óptimos
Se dice que el momento óptimo de cosecha del cannabis es cuando presenta aproximadamente un 70% de tricomas blancos opacos o lechosos y un 30 % de color ámbar. Esta proporción debería ofrecer efectos más equilibrados y duraderos.
En cambio, cuando la mayoría de los tricomas tienen una coloración ámbar, la planta debería tener efectos más sedantes. La mayoría de los cultivadores intentan cosechar las plantas cuando las flores contienen la mayor proporción de tricomas maduros.
El momento óptimo de maduración de los tricomas y cosecha suele ser cuando la mayoría de los tricomas están de color lechoso y empiezan a asomar los primeros tonos ámbar, obteniéndose así un efecto híbrido y balanceado.
Types of trichomes according to their degree of maturation
Stage 1: Transparent trichomes
In this first stage, the trichomes are small and almost invisible. They indicate that the resin is in the process of production and has not yet developed its full content of cannabinoids and terpenes. At this stage, the THC content is low. At this point, the plant is not yet ready for harvest, as the compounds are not yet fully developed.

Stage 2: Milky trichomes or opaque white color.
As the plant matures, the trichomes take on an opaque white or milky color. At this point, the THC content of the trichomes is at its highest concentration, which means that the plant is more psychoactive. At the same time, CBD levels are low and stable due to its rapid conversion to THC.
Terpenes are also present at this stage, contributing to the characteristic aromatic profiles of cannabis. Flowers at this stage smell intensely and have a captivating aroma.
Not surprisingly, many growers choose to harvest at this stage. The milky trichomes offer a more cerebral effect, typically classified as “sativa effect”, ideal for moments of creativity, concentration and socialization. The low levels of CBD and CBN allow the THC to have its maximum effect, without being too sedative. This improves the quality of the desired stimulant effect.
Generally, harvesting is done at this stage. Some wait for the moment when most of the trichomes are milky or opaque in color, but amber hues begin to appear. This stage is ideal for those seeking more balanced effects between euphoria and relaxation, typically associated with “hybrid” varieties.

Stage 3: Amber Trichomes
As maturation continues, the milky trichomes turn amber or brown. The amber-colored trichomes are an indicator that the THC is beginning to degrade into CBN, known as the “sleep cannabinoid” for its sedative effects.
At this stage, the plant can provide more sedative effects and more relaxing properties. A high amber trichome content may be more suitable for those seeking relaxing, narcotic or medicinal effects, typically associated with the “indica effect”. Many flowers destined for the hashish production are harvested at this stage, and it may also be the time to harvest some late “sativas”.
Don’t miss our post about the differences differences between indica and sativa strains .

Some growers prefer to harvest when most of the trichomes are milky, while others wait until the first amber tones appear to obtain a harvest of hybrid effects. Ultimately, the decision to harvest is based on personal preference and the type of experience one seeks from cannabis. By knowing the preferences of their consumers and harvesting consistently according to the level of trichome maturity, growers can build a solid and reliable reputation.
Frequently asked questions about trichome maturation
¿Cuándo es el mejor momento de cosechar?
¿Cómo saber aproximadamente la fecha de la cosecha?
¿Qué ocurre si cosechas antes de tiempo?
¿El color de los estigmas es indicativo de la madurez de la flor?
We hope you have found this short introduction to the identification of mature cannabis trichomes helpful. Good luck with your harvest! Don’t miss our tips on drying and curing of cannabis you will also need to be informed about it.
While you wait for them to mature, you can make sure you get the highest quality product from our online CBD store, which offers a wide range of carefully grown and harvested buds at their peak. Our staff is always available to help you choose the perfect variety. So take a few moments to browse through our selection and don’t forget those ripe trichomes!
