What is cannabis?

The cannabis plant has been part of human history for thousands of years. Over time, it has been used in various ways, including in ritual contexts, for recreational purposes and for practical applications. Its history is long and complex, spanning cultures and generations.

According to the journal Vegetation History and Archaeobotany, cannabis likely originated in Central Asia, more specifically the north-eastern Tibetan Plateau. From there, the plant spread in both directions, eventually reaching South Asia. Its adaptability, versatility and resilience in different climates contributed to this widespread distribution.

The plant contains over 480 different compounds. One of the best known is tetrahydrocannabinol (THC), which has psychoactive properties. Another is cannabidiol (CBD), which has received considerable attention in recent years. These and other cannabinoids interact with the body's endocannabinoid system, which is involved in various internal processes.

After over a decade of intensive work with CBD and hemp, I have witnessed how public perception of cannabis has shifted. More people are showing interest in understanding the plant beyond headlines and stereotypes.

For a long time, cannabis was stigmatized and subject to strict legal restrictions, primarily due to its psychoactive effects. This image has not completely disappeared, but the perception is changing. Ongoing research and a deeper understanding of the plant's complex structure are leading to a more balanced view of its place in modern society.

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Key takeaways

• Cannabis is a plant with a long history of use across various cultures, from spiritual to recreational purposes.
• It contains numerous compounds, including cannabinoids such as THC and CBD, which interact with the human endocannabinoid system.
• The main types are Cannabis sativa, Cannabis indica and Cannabis ruderalis, each with distinct characteristics.
• The plant is dioecious, meaning there are both male and female plants, and it completes its life cycle within a year.
• Despite historical controversy, perceptions of cannabis are evolving towards a broader understanding of its diverse applications.

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The cannabis plant

Cannabis is generally classified into three main types: Cannabis sativa, Cannabis indica and Cannabis ruderalis. This classification is based on physical traits and growth behavior.

Cannabis sativa

Cannabis sativa is known for its height and long, narrow leaves. These plants typically thrive in warmer regions and have a longer flowering period. Due to their structure, they are often chosen for agricultural or industrial purposes and are a key component of many hemp-based applications.

What is Cannabis sativa?

Cannabis indica

Cannabis indica grows more compactly, is shorter and has broader, denser leaves. It is well suited to cooler climates and has a shorter flowering period compared to sativa. Indica varieties are often preferred for cultivation in controlled environments with limited space.

Cannabis ruderalis

Cannabis ruderalis is less well known and is characterized by its small size, reduced branching and fewer leaves. Its unique trait is autoflowering ability, meaning it transitions to the flowering phase based on age rather than light cycle.

This trait makes ruderalis particularly interesting for breeding projects focused on developing strains with flexible flowering times.

Hybrid varieties

Through selective crossbreeding, hybrids have been developed that combine traits from sativa, indica and ruderalis plants. These hybrids can be tailored to specific growing conditions, structural features or cannabinoid profiles, for example, for use in topical products or industrial applications.

Chemical components of cannabis

The cannabis plant contains a wide range of naturally occurring compounds, including cannabinoids, terpenes and flavonoids. The most widely known and studied cannabinoids are THC and CBD.

THC, or tetrahydrocannabinol, is the primary psychoactive element of the plant. It interacts with specific receptors in the body, particularly the CB1 receptor, which is associated with various neurological and biological processes.

CBD, or cannabidiol, is another well-known cannabinoid. Unlike THC, it is not associated with psychoactive effects. Ongoing research into CBD continues to explore potential applications and interactions with other plant compounds.

In addition to cannabinoids, cannabis also contains terpenes, aromatic compounds that shape the plant’s distinctive scent profile. Terpenes are believed to influence the overall experience with the plant.

A frequently discussed concept in scientific circles is the so-called “entourage effect”, which considers the interplay between cannabinoids and terpenes and how they may influence one another.

What are terpenes?

The endocannabinoid system

The endocannabinoid system (ECS) is a natural part of the human body and plays a role in regulating and responding to various internal and external influences. It consists of endocannabinoids, specific receptors, primarily CB1 and CB2, as well as enzymes that produce and break down these compounds.

The ECS is thought to be involved in a wide range of biological processes, including the sleep-wake cycle, mood, appetite signalling, memory functions and aspects of reproduction. Scientists continue to research its mechanisms across different domains.

Ongoing studies aim to clarify how these interactions function and what they may reveal about the ECS as a whole.

The endocannabinoid system

Cannabis cultivation

Research into the endocannabinoid system (ECS) has increased significantly in recent years. Studies are examining its role in numerous physiological processes. Despite growing scientific interest, many aspects of its exact function in the human body remain the subject of ongoing investigation.

The cultivation of cannabis follows a structured process requiring a solid understanding of the plant’s growth cycle and environmental needs.

Typically, cultivation involves several stages: germination, where the seeds begin to sprout; the vegetative phase, marked by vigorous leaf and stem growth; the flowering phase, during which the characteristic flower structures develop; and finally the harvest, where mature plants are collected at the right time depending on their intended use.

Each phase has specific requirements for lighting, temperature, humidity and nutrient supply.

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Germination

Germination is the first stage in the development of a cannabis plant. During this phase, seeds are stimulated to sprout and form a seedling. This process typically takes between 24 and 72 hours.

During this time, seeds are usually placed in a warm, moist environment to encourage sprouting. Some growers use specially designed germination kits, while others prefer a simple method using damp paper towels in a consistently warm location.

Once germinated, seeds should be handled carefully to avoid damaging the delicate primary root. The proper planting technique involves placing the seed about half an inch deep into the chosen substrate, with the root pointing downwards.

Vegetative phase

The vegetative phase is characterized by vigorous structural growth. The plant focuses on developing stems, leaves and branches necessary for subsequent stages. The duration of this phase can vary from several weeks to months, depending on growing conditions and genetics.

Intense lighting, typically between 18 and 24 hours per day, is important for promoting upright and expansive growth. Additionally, adequate nutrient supply, especially nitrogen-rich components, is crucial for healthy plant development.

Flowering phase

During the flowering phase, the cannabis plant begins to develop flower clusters. This stage is triggered by a change in the light cycle, specifically 12 hours of light followed by 12 hours of darkness each day.

The plant’s nutrient requirements also shift during this phase. Nitrogen demand decreases, while phosphorus and potassium become more important as they support flower formation.

The flowering phase continues until the mature flowers are ready for harvest. The exact duration depends on the strain and cultivation conditions, but usually ranges between 8 and 12 weeks.

Harvest

Harvesting marks the final stage of cannabis cultivation. The right time to harvest is critical to maximize the quality and yield of the flowers. If harvested too early, the flowers may not be fully developed; if harvested too late, the THC content may begin to degrade.

To determine the optimal timing, a magnifying glass is often used to examine the trichomes, the tiny resin glands on the flowers. When most trichomes appear milky white and some are amber, this is generally considered the ideal time to harvest.

After harvesting, the flowers must be dried and cured. They are hung in a controlled environment to slowly remove moisture. This step enhances the aroma and quality of the flowers while preventing mold growth.

Indoor and outdoor cannabis cultivation

Cannabis can be grown either indoors or outdoors. Each method offers specific advantages and requires different approaches.

Indoor cultivation

Indoor cultivation allows for full control over environmental conditions, including light cycles, temperature, humidity and nutrient supply. This level of control makes it possible to tailor the growing environment to the specific needs of particular cannabis strains.

However, setting up an indoor facility often requires a larger initial investment. Key components include artificial lighting systems, air filtration, ventilation units and environmental control devices. Ongoing operational costs, especially electricity, can also be significant.

Outdoor cultivation

Outdoor cultivation is generally more cost-effective to implement. By relying on sunlight and natural environmental conditions, it is possible to grow large, robust plants.

The open environment offers ample space for root expansion and vertical growth. However, it also presents risks such as unpredictable weather, pest infestations or plant diseases. Successful outdoor cultivation depends on a good understanding of local climate conditions and proper timing.

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Challenges and solutions in cannabis cultivation

Successful cannabis cultivation requires ongoing attention to plant development and timely action to address any emerging problems. Regardless of the method used, whether indoor, greenhouse or outdoor, maintaining optimal growing conditions is key to achieving high-quality results.

Nutrient management

A frequent challenge in cultivation involves nutrient imbalances. Cannabis plants rely on precise ratios of macro- and micronutrients, and either deficiencies or excesses can hinder development.

Symptoms such as discolored leaves, slowed growth or poor flower formation often indicate nutritional issues. Regular testing of soil or growth medium, combined with appropriate adjustments to feeding schedules, can help maintain nutrient stability.

Pest and disease control

Growers also contend with pests and pathogens. Common threats include insects, fungal infections and bacterial contamination. In indoor environments, sanitation, air circulation and environmental monitoring can significantly reduce the risk.

In outdoor settings, growers often rely on preventative methods and, where necessary, certified organic pest deterrents that comply with agricultural standards.

Resource awareness

Cultivation requires a solid understanding of plant biology, climate control and input management. Access to reliable information and the appropriate tools can significantly improve results. While challenges are inevitable, they can be addressed effectively with observation, preparation and informed techniques.

Personal perspective

In my years of working within the CBD and hemp industry, I have found cannabidiol (CBD) to be one of the most compelling aspects of the cannabis plant. Its complex structure, non-intoxicating nature and broad potential for application have positioned it at the centre of both scientific research and industry conversations.

From seed selection to extraction, each stage of production reveals something new about the compound's versatility and how its quality can vary depending on agricultural and processing standards.

Having managed and observed numerous cultivation and extraction operations, I have come to appreciate the importance of precision and consistency when working with CBD.

Variations in plant genetics, soil quality and extraction methods can significantly affect the profile and concentration of cannabinoids present. This level of detail and control is essential in maintaining a reliable product and advancing the understanding of CBD’s role within the broader cannabis context.

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Difference between cannabis, marijuana and hemp