# Fabric pot

> A fabric pot is a breathable, sewn felt or non-woven container that lets air and water through its walls, drying the medium faster and air-pruning roots.

- Canonical: https://genetixbay.com/knowledge/glossary/fabric-pot.html
- Also written: fabric pots, grow bag, grow bags, smart pot, cloth pot, felt pot
- Glossary category: Cultivation and training · Evidence: Grower practice
- 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"

A fabric pot is a soft container made of non-woven polypropylene or felt. Water evaporates through the walls, which raises air in the [root zone](https://genetixbay.com/knowledge/glossary/root-zone.md), cools the medium by evaporation, and air-prunes roots: tips that reach the wall dry out and stop, prompting branching instead of circling.

## In practice

Fabric pots are forgiving of heavy-handed watering and are popular in soil and [coco](https://genetixbay.com/knowledge/glossary/coco-coir.md). The flip side is that they dry faster and unevenly, so in hot, [dry rooms](https://genetixbay.com/knowledge/glossary/drying-room.md) they need water more often, and the outer layer of medium can dry out before the core. Stand them on a raised tray or crate so the base [drains](https://genetixbay.com/knowledge/glossary/runoff.md) and does not wick runoff back.

Sizes are usually sold in US gallons (a "5 gal" bag holds about 19 L when full, often less in practice).

## Don't confuse with

- **Air pot**: a rigid plastic pot with cones and holes; also air-prunes, but holds its shape and dries differently.
- **Plastic nursery pot**: solid walls; holds water longer and roots circle at the wall.

## Related terms

[Air pot](https://genetixbay.com/knowledge/glossary/air-pot.md), [Pot size](https://genetixbay.com/knowledge/glossary/pot-size.md), [Root-bound](https://genetixbay.com/knowledge/glossary/root-bound.md), [Overwatering](https://genetixbay.com/knowledge/glossary/overwatering.md)

## Read more

- [Growing in soil (potting mix with bottled feed)](https://genetixbay.com/knowledge/systems/soil.md)
- [Growing in coco coir](https://genetixbay.com/knowledge/systems/coco.md)

## Sources

1. Raviv M, Lieth JH, Bar-Tal A (eds), 2019. Soilless Culture: Theory and Practice, 2nd ed. Elsevier. https://doi.org/10.1016/C2015-0-01807-5