Ecovative grows packaging from mushroom roots and farm waste

Eben Bayer grew up on a Vermont farm shoveling woodchips into a maple-syrup evaporator, and had noticed clumps of chips fused together by tough white fibers — mycelium, the root structure of fungi, which digests plant matter and binds it into a solid mass as it grows. At Rensselaer Polytechnic Institute, he and classmate Gavin McIntyre were asked by a professor to find a solution to a real-world problem, and picked Styrofoam packaging, a petroleum-based material that takes roughly 450 years to break down and had no widely adopted biodegradable substitute.

Every existing alternative to Styrofoam still required conventional manufacturing — molding, curing, energy input — to shape material into a protective form, which kept costs and environmental footprint high even when the material itself was greener. Bayer and McIntyre's problem became how to shape a packaging material without manufacturing it in the traditional sense at all.

Let mycelium do the shaping for free: packed farm waste into a mold, and the fungus digested and bound it into a rigid block, skipping factory energy and equipment.

Mycelium naturally binds loose plant matter into a solid mass as it grows, doing the shaping and bonding a factory would otherwise do.

Packing agricultural waste into a mold lets the fungus grow into the exact shape, eliminating the need for molding, adhesives, and heat.

Using cheap waste feedstock and letting growth do the work drastically cuts capital and energy costs compared to conventional manufacturing.

The resulting material is compostable, addressing the environmental problem of Styrofoam's long decomposition time.

When shaping a material is costly, see if a living organism can grow it into shape from cheap waste, replacing capital equipment with time.

Ecovative's mushroom packaging is used by Dell and IKEA as a Styrofoam replacement, compostable in a home garden within weeks. Ecovative helped launch an entire mycelium-materials industry beyond packaging, into leather alternatives, foam replacements and building insulation, all built on the same principle of letting fungal growth do manufacturing's job for free on agricultural waste.