Indica is the label shops use for strains people expect to feel mellow and heavy, the kind many save for the evening. The word comes from old botany, and the plants it describes really do look different from sativas. Whether the label tells you how a product will feel is another story.
What does indica mean?
Today, indica is mostly a shop word for a mood: calm, settled, body-centred. Growers also use it for a plant shape, short and dense with wide leaflets.
In Canada, indica is not one of the things a legal label has to show. Health Canada's labelling guide requires items like total THC and total CBD, while strain names and terpene profiles are optional. So "indica" on a package is the producer's own description, not a measured value.
Where does the word indica come from?
In 1785 the French naturalist Jean-Baptiste Lamarck named Cannabis indica, "cannabis of India", from plants collected there. He described them as the stronger intoxicant with weaker fibre than the European hemp Linnaeus had named Cannabis sativa.
The modern picture of an indica came later. In the 1970s and 1980s, botanists and growers tied the name to short, broad-leaf plants from Afghanistan and the Hindu Kush. Researchers have since pointed out that this popular meaning doesn't match Lamarck's original description very well.
What does an indica plant look like?
Indica-type plants are described as short, conical and densely branched, with broad leaflets. They usually finish flowering earlier than sativa types, which made them popular with growers in cooler places and indoors. Classic examples tied to that Afghan background include Afghan Kush, Hindu Kush and Northern Lights.
What do people say indicas feel like?
People most often describe indicas as calm, mellow and heavy in the body, sometimes with couch-lock at higher amounts. Many choose them for the end of the day.
These are reports, not promises. How a product feels depends a lot on how much THC it has, how much you take, how you take it and your own tolerance. Expectation matters too: a jar that says indica can nudge you toward feeling what you expect.
Are indica labels accurate?
Only loosely. A 2021 study found that samples labelled indica and sativa were genetically indistinct across the genome, although indica labels did line up with more myrcene, an earthy, musky terpene. A 2022 study of nearly 90,000 US products found terpene profiles of indica-labelled products were indistinguishable from those labelled sativa or hybrid.
After decades of crossbreeding, almost every indica on the shelf is really a hybrid with an indica lean. Our indica vs sativa guide covers the research in more detail.
How to choose an indica
Use the label as a starting point, then check the numbers. Total THC tells you most about strength, and Health Canada suggests new users start low, such as one or two puffs of flower at 10% THC or less, then wait. If terpenes are listed, note the ones in products you've liked. If an indica-labelled product felt too lively for you, compare it with a sativa you've tried: the terpenes may explain more than the label.
Sources: en.wikipedia.org, en.wikipedia.org, pmc.ncbi.nlm.nih.gov, doi.org, canada.ca, canada.ca