Using the knitted moulds as a flexible framework or ‘formwork’, the scientists created a composite called ‘mycocrete’ which is stronger and more versatile in terms of shape and form, allowing the scientists to grow lightweight and relatively eco-friendly construction materials.

“Our ambition is to transform the look, feel and wellbeing of architectural spaces using mycelium in combination with biobased materials such as wool, sawdust and cellulose,” said Dr Jane Scott of Newcastle University.

To make composites using mycelium, scientists mix spores with grains they can feed on and material that they can grow on. This mixture is packed into a mould and placed in a dark, humid, and warm environment so that the mycelium can grow, binding the substrate tightly together.

Once it’s reached the right density, but before it starts to produce fruiting bodies such as mushrooms, it is dried out. This process could provide a cheap, sustainable replacement for foam...