What Is a Landrace Strain? The Old-School Cannabis Word, Decoded
Last checked: October 27, 2026
Somebody at the counter says "that's a landrace," and half the room nods like they know what it means. Most don't. "Landrace" is one of the most misused words in cannabis, slapped on everything from seed packs to menu blurbs. So what is a landrace strain, really? King Rock, at 1220 King St W by King & Dufferin, cuts through it for adults 19+. Quick corrections included, as always.
What is a landrace strain? The plant-science answer
"Landrace" isn't a cannabis invention. It's a farming term that applies to every crop, from wheat to beans to tomatoes.
A widely cited definition, quoted in a 2017 Frontiers in Plant Science paper on the concept, describes a landrace as "a cultivated, genetically heterogeneous variety that has evolved in a certain ecogeographical area and is therefore adapted to the edaphic and climatic conditions and to its traditional management and uses."
Unpack that:
- Cultivated: people grow it. It's not purely wild.
- Genetically heterogeneous: the plants aren't clones of each other. There's natural variation in the population.
- Evolved in one area: it's shaped by a specific place over a long time.
- Adapted: to the local soil (that's "edaphic"), the climate and the way local farmers grow and use it.
So a landrace is a population, not a single plant.
Landrace cannabis specifically
For cannabis, a 2017 review in Critical Reviews in Plant Sciences on cannabis domestication and breeding history describes traditional landrace varieties as cultivars that came from "a combination of natural and farmer selection," formed as people spread cannabis across the world and local climate and culture shaped it.
Then modern breeding happened. The same review explains that breeders combined populations from very different regions and gene pools, and that heavy use of single-plant selection, inbreeding and cloning narrowed genetic diversity in many present-day cultivars. That's the backstory behind most of what's sold today: hybrids built from crossed lines, not untouched regional populations.
Why "landrace strain" is a bit of a contradiction
Here's the twist. A 2022 paper in GeoJournal on cannabis terroir points out that "strain" has no official meaning in botany, and argues that landraces can't really be considered varieties, cultivars, "much less strains." The same author notes that much amateur cannabis writing gets landraces wrong, describing them as strains, wild varieties or "purebreds," when a landrace population is actually full of plant-to-plant variation.
Translation for the King West crowd: when a product calls itself a "landrace strain," treat it as a story, not a certificate.
Landrace vs heirloom vs hybrid
| Term | What it usually means |
|---|---|
| Landrace | A local, genetically varied population shaped by one region and its farmers over a long time |
| Heirloom | Loose term for older lines kept going outside their original region; definitions vary |
| Hybrid (in breeding) | Offspring of two different parent lines crossed on purpose |
| Cultivar | A named cultivated variety with a stable, recognisable form |
| Strain | Industry word with no formal botanical meaning |
Watch the last row. Labels use product names. Breeders use cultivar language. "Strain" is what everyone actually says.
What is a landrace strain NOT?
- Not a THC promise. The only reliable numbers are Total THC and Total CBD on a legal label.
- Not a guarantee of origin. Nothing on a standard Canadian label proves a flower descends from a regional population.
- Not one single plant. A real landrace is a population with built-in variation.
- Not automatically "pure." Most modern cannabis has crossed ancestry somewhere.
How to read the word on a menu
When you see "landrace" in a product description:
- Treat it as the producer's description. It's not a regulated term.
- Read the label anyway. Product class, Total THC, Total CBD, net weight, packaging date.
- Look at the flower if the package lets you. Your eyes beat a buzzword.
- Ask questions. Good staff will tell you what's on the label and what isn't.
Questions people ask at King & Dufferin
Are landraces wild cannabis? No. Landraces are cultivated by people. Wild or feral populations are a separate conversation.
Why do people chase landrace genetics? Partly history, partly diversity. The domestication review notes modern breeding narrowed genetic diversity, so older regional populations carry variety breeders find interesting.
Is there a "best" landrace? Not a ranking we'll make. Read the label and decide for yourself.
The bottom line
So, what is a landrace strain? Strictly, it's a contradiction: a landrace is a locally adapted, genetically varied crop population, and "strain" isn't a botanical term at all. In shop talk, it's a nod to old regional cannabis lines. Respect the history, skip the hype, read the label.
Passing through King West? The King Rock visit page has the trip details, and the King West weed dispensary page covers the stretch. King Rock is for adults 19 and over. Bring government-issued photo ID.