Cannabis is commonly classified as “indica”, “sativa,” or “hybrid,” but these traditional categories may not fully explain how different cannabis products vary, particularly in medical contexts. While such labels offer a general point of reference, they do not consistently account for the wide range of individual responses.
To gain a clearer picture, scientists are now looking beyond plant type and focusing on terpene profiles, which are the naturally occurring compounds that influence aroma, flavour, and possible effects.
Read on to explore how terpenes are changing the way we think about cannabis, and why this shift matters for personalised care.
At a Glance
- Cannabis is traditionally classified as indica, sativa, or hybrid, based on plant characteristics and breeding history.
- Many modern cannabis products are hybrids and do not fit neatly into a single traditional category.
- Research suggests that indica and sativa labels do not consistently reflect the chemical composition of cannabis products.
- A recent analysis of 140 cannabis strains identified 38 different terpenes, highlighting variation in terpene profiles across products.
Indica vs Sativa: The Traditional Way Cannabis Has Been Classified
Cannabis sativa and cannabis indica are the two primary categories historically used to classify cannabis plants. For decades, these labels have served as a simple way to describe the expected effects of different cannabis products, with sativa typically associated with more uplifting effects and indica with more relaxing ones. However, as cannabis research has advanced, experts have begun to question how accurate and clinically relevant this binary classification truly is.
That said, the indica/sativa distinction still holds practical value, particularly for patients who are new to medical cannabis. These categories can provide a useful starting point, helping patients and healthcare professionals discuss how a particular product may align with specific symptoms or treatment goals. While not definitive, describing a medicine as indica or sativa can make it easier to understand why one option may be better suited to an individual’s condition than another.
What is Indica?
The term indica originates from the Latin meaning “of India,” reflecting early botanical theories about where these cannabis plants were first identified. Traditionally, indica strains are described as shorter, bushier plants that thrive in cooler climates and have faster flowering times.
Indica strains are commonly associated with more physically relaxing characteristics and are often discussed in the context of rest or unwinding. Individual responses can vary, and these associations are not consistent across all products.
What is Sativa?
Sativa is a variety of the cannabis plant. The name stems from the Latin adjective sativus, meaning cultivated, highlighting the plant’s long history of agricultural use.
Cannabis classified as sativa is often linked to energising, uplifting, or mentally stimulating effects and to daytime use. While some classifications may include ruderalis under the sativa umbrella, ruderalis is now more commonly recognised as a distinct category due to its unique genetic traits.
What Are Hybrid Strains?
Hybrid strains are cannabis plants bred from a combination of indica and sativa. As cannabis breeding has evolved, many modern cannabis strains are classified as hybrids because they share genetic characteristics from both traditional types. This means that a large proportion of cannabis products available today fall under the hybrid category rather than being considered purely indica or sativa.
Moving Beyond Indica and Sativa in Medical Cannabis
In medical cannabis, there is growing recognition that classifying products solely as indica or sativa does not fully capture the complexity of the plant. Researchers and clinicians are increasingly considering the broader chemical composition of cannabis, including cannabinoids and terpenes, when comparing different products.
While terpene profiling may offer a more detailed way to describe cannabis, this approach is still developing and can be more complex than traditional labels. For many patients, indica and sativa remain familiar starting points, particularly when first exploring medical cannabis treatment.
For this reason, medical cannabis clinics focus on supporting patients through treatment selection using clear, accessible information, while recognising the limitations of traditional labels such as indica and sativa. Individual responses to cannabis can vary significantly, and no single classification system can fully predict how a product will be experienced, which is why care is approached on an individual basis.
What Research Tells Us About Terpenes and Cannabis Classification
To better understand the limitations of traditional cannabis classifications, researchers have examined the chemical composition of cannabis products in more detail. One recent scientific analysis explored whether terpene profiles could help explain differences between cannabis products beyond the labels of indica, sativa, or hybrid.
The study analysed the terpene content of 140 individual cannabis strains, focusing on medical cannabis flowers available on the German market. By comparing terpene profiles with existing strain classifications, the researchers aimed to assess whether chemical composition offers a more consistent way to describe cannabis products than plant type alone. [1]
This research does not seek to replace current classification systems, but rather to provide additional context for why cannabis products with similar labels can differ in aroma, flavour, and overall composition.
What Are Cannabis Chemovars?
The term chemovar, short for “chemical variety”, is used to describe plants with distinct combinations of chemical compounds, such as cannabinoids and terpenes.
In cannabis research, chemovars are used to group products based on chemical composition rather than plant type alone, offering an alternative framework for comparing different cannabis varieties.
Do Terpene Profiles Match Indica, Sativa, or Hybrid Labels?
When terpene profiles were compared across cannabis products labelled as indica, sativa, and hybrid, no meaningful differences were identified between the groups. Of the 140 cultivars analysed in this study, 64 were categorised as “hybrids,” 47 as “indica,” and 29 as “sativa”.
Products carrying different traditional labels were just as likely to share similar terpene profiles as they were to differ. This finding highlights the limitations of using indica, sativa, or hybrid classifications to describe the chemical composition of cannabis products.
Grouping Cannabis by Chemical Profile
The researchers organised the analysed cannabis cultivars into six distinct clusters based on their terpene content. Each cluster contained a mix of products labelled as indica, sativa, and hybrid.
This clustering was proposed as an extension of existing cannabinoid-based chemotypes, such as THC-dominant, CBD-dominant, or balanced cannabis, rather than as a replacement for current classification systems.
Conclusions
Ongoing research suggests that the traditional classification of cannabis as indica, sativa, or hybrid may have limitations, particularly in medical contexts. Findings from this analysis highlight that these broad categories do not consistently reflect the underlying chemical composition of cannabis products.
The authors of the study propose that examining cannabis through its cannabinoid and terpene profiles may offer a more detailed framework for research, supporting clearer comparison between products. This type of chemical-based classification is intended to improve scientific understanding and may help inform future research into medical cannabis, rather than replace existing systems used in practice.
As research continues to develop, it reinforces the importance of viewing cannabis as a complex plant and recognising that individual responses can vary. Exploring emerging evidence helps build a more informed picture of how medical cannabis may be understood and studied over time.
Explore more of our articles to stay up to date with the latest research and insights on medical cannabis.
References
- Herwig et al. (2024). Classification of cannabis strains based on their chemical fingerprint. Cannabis and Cannabinoid Research. https://doi.org/10.1089/can.2024.0127
