In general, compostable materials are materials which biodegrade in a composting process through the action of naturally occurring micro-organisms within a specified timeframe.

For us, when we say a product is compostable we mean it has been certified to standard EN13432 or equivalent which certifies that the material in question will decompose in an industrial/commercial composting facility within 12 weeks. And specifically, the resultant compost will be used to grow more plants and is ideally PAS100 compliant. Another type of compostability is home compostable which means you can pop something into your home compost system with your personal food waste and gardening scraps, and it will eventually break down into that nutrient dense mulch that you can use in your garden.