# Sinsemilla

> Sinsemilla (sensi) is seedless cannabis flower from unpollinated female plants; the word is Spanish for "without seed".

- Canonical: https://genetixbay.com/knowledge/glossary/sinsemilla.html
- Also written: sensi, sinse, sens, sin semilla
- Glossary category: Grower slang and culture · Evidence: Supported
- Status: Draft: awaiting expert review · Updated: 2026-10-31
- Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary"

Sinsemilla (Spanish *sin semilla*, "without seed"), shortened to sensi or sinse, is flower from female plants that were never [pollinated](https://genetixbay.com/knowledge/glossary/pollination.md). Without seed to fill, the plant keeps making flowers and resin, and the dried buds have no seeds to burn or crack.

## In practice

Growing sensi means removing males before they shed pollen and keeping [intersex plants](https://genetixbay.com/knowledge/glossary/hermaphrodite.md) out of the room. Nearly all modern indoor flower is sinsemilla by default. The word was a selling point when most imported cannabis was seeded.

Sinsemilla is old. Growers in many regions have produced it for centuries, and [hashish](https://genetixbay.com/knowledge/glossary/hashish.md) and [charas](https://genetixbay.com/knowledge/glossary/charas.md) traditions depend on well-grown, resinous female plants.

## Don't confuse with

- **Seeded flower / brick**: cannabis grown with males present, usually compressed for export.
- **Feminised seed**: a way to get all-female plants; sinsemilla is the result, however the females were obtained.

## Myth check

"Old weed was weak; sensi is a modern invention." GenetixBay position (*Supported*): false. Regional growers have grown sinsemilla for generations, but the cheap seeded brick that dominated exports was what most Western users and government monitoring programmes saw. Good sensi reached the US market in volume mostly from the late 1970s and 1980s. See [old cannabis was not weak](https://genetixbay.com/knowledge/genetics-history/old-cannabis-was-not-weak.md).

## Related terms

[Brick weed](https://genetixbay.com/knowledge/glossary/brick-weed.md), [Landrace](https://genetixbay.com/knowledge/glossary/landrace.md)

## Read more

- [Old cannabis wasn't weak: the "so much stronger than 20 years ago" myth](https://genetixbay.com/knowledge/genetics-history/old-cannabis-was-not-weak.md)
- [Male, female and hermaphrodite cannabis: how sex works](https://genetixbay.com/knowledge/basics/sex-male-female-hermaphrodite.md)

## Sources

1. Clarke RC, Merlin MD. 2013. Cannabis: Evolution and Ethnobotany. University of California Press.
2. ElSohly MA, Mehmedic Z, Foster S, Gon C, Chandra S, Church JC. 2016. Changes in cannabis potency over the last 2 decades (1995-2014): analysis of current data in the United States. Biological Psychiatry 79(7):613-619. https://doi.org/10.1016/j.biopsych.2016.01.004