# Larf

> Larf is small, airy, underdeveloped buds from the lower, shaded parts of a plant, usually low in density and weight.

- Canonical: https://genetixbay.com/knowledge/glossary/larf.html
- Also written: larfy, larf buds, lurf, fluff
- Glossary category: Grower slang and culture
- 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"

Larf is the wispy, loose, undersized bud growth that forms deep in the canopy, where light intensity is too low for flowers to fill out.

## In practice

Larf forms where light drops off: indoors, light intensity falls fast below the top of the canopy, and lower sites receive a fraction of the top's [PPFD](https://genetixbay.com/knowledge/glossary/ppfd.md). A plant with many low branches spends resources on sites that will never fill. Growers reduce larf by training for an [even canopy](https://genetixbay.com/knowledge/glossary/even-canopy.md) ([SCROG](https://genetixbay.com/knowledge/glossary/scrog.md), [LST](https://genetixbay.com/knowledge/glossary/lst.md), manifolding) and by removing the lowest growth before or in early flower ([lollipopping](https://genetixbay.com/knowledge/glossary/lollipopping.md)). GenetixBay's "tuck, don't pluck" approach favours moving leaves and branches into light over stripping where possible.

Larf is still usable: it is often set aside for hash, edibles or personal use.

## Don't confuse with

- **Popcorn buds**: small but dense buds; larf is small and airy.
- **Foxtailing**: spiky regrowth on mature buds from heat or [light stress](https://genetixbay.com/knowledge/glossary/light-stress.md).

## Related terms

[Popcorn buds](https://genetixbay.com/knowledge/glossary/popcorn-buds.md), [Lollipopping](https://genetixbay.com/knowledge/glossary/lollipopping.md), [Canopy](https://genetixbay.com/knowledge/glossary/canopy.md), [Nugs](https://genetixbay.com/knowledge/glossary/nugs.md)

## Read more

- [Defoliation and lollipopping: what to remove, when, and the evidence](https://genetixbay.com/knowledge/training/defoliation-lollipopping.md)
- [SCROG: screen of green](https://genetixbay.com/knowledge/training/scrog.md)