Katherine Martinko is an expert in sustainable living. She holds a degree in English Literature and History from the University of Toronto.

Opening a store is tough these days. It can also be expensive and wasteful. When MONC Eyewear—Treehugger's best luxury sustainable sunglass brand—opened its first store, they designed it in such a way that if it was to be relocated, it would leave no trace behind, promising that "everything inside the MONC store can be reused at its next location, will fit in a home environment, can be disassembled for recycling or returned to the ground as nourishment."

I have used the term "built out of sunshine" to describe those materials that are grown out of carbon, water, and sunlight; the most common being wood. But MONC's owner and creative director Freddie Elborne, along with designer Nina Woodcroft—the designer behind SILO, London's first zero-waste restaurant, and founder of London-based design studio Nina+Co—go way beyond that, using materials I haven't heard of or ever seen used in this way.

Solid surfaces are made of bio acetate—the same material they use for their frames. Cellulose acetate is one of the oldest bio-plastics, invented in 1865. It was combined with plasticizers such as diethyl and dimethyl phthalate to make the plastic materials used for high-quality glasses, but as we have noted before, "phthalates have been found to have serious impacts on our environment as well as a wide range of concerns linked to their effects on our health."

Bio acetate, made by Mazzucchelli in Italy, replaces the phthalate plasticizer with a "proprietary plasticizing solution of vegetable origin." It apparently is biodegradable in 115 days under ISO 14855, dissolving into carbon dioxide, water, and mineral salts. This concerned me, as my eyeglasses are made of the stuff and I am out in the sun and the rain all the time with them. But apparently, you need to bury them to let soil microbes do the work.

Cornstarch foam is used in the displays and on the dramatic ceiling. MONC says, "The functional material was originally used as packaging, but now for the first time being incorporated into the store due to its beauty and ethereal nature. It is compostable, recyclable, and will dissolve in water."

It is interesting stuff that we developed as a renewable alternative to polystyrene foam. While MONC says it is recyclable, an American manufacturer noted that it is "NOT a recyclable material." It added: "Rather than taking up valuable space in your home, garage, or recyclable containers, we suggest simply rinsing it down the drain, composting it, or using it as a fire starter for grills, fireplaces, or firepits."

The flammability of that ceiling actually worries me. This is not usually used as an architectural product, but according to PakFactory, "cornstarch packaging has low flammability."

Hemp is used in a number of ways, including as a fabric in curtains and also as a solid corrugated panel, which I have not seen before. MONC learned about it from Margent Farm, where it is used in a remarkable building by Practice Architecture.

According to vendor Margent Farm, this is "a hemp fibre based corrugated sheet that can be used for both exterior and interior wall cladding. The sheet is bound with a sugar based resin made entirely from agricultural waste. Our hemp sheets are a natural alternative to corrugated steel, PVC, bitumen and cement. The sheets can be used externally to form a rain screen or internally as ceiling or wall linings or other acoustic treatments. The product is natural and like timber exposed to UV the colour will lighten over time."

It looks fabulous, but it's not cheap. Margent Farm worked with composite developer Cecence—yet another interesting company worth looking into—to produce the panels.

In the MONC store, "The corrugated hemp panel adds playfulness, tactility and contrast to our scheme which is mirrored in the 100% hemp fabric curtain hanging below the main island. When sourcing a doormat we opted for 100% hemp too."

Finally, we have mycelium—the magical mushroom material. MONC wrote:

MONC worked with Ashley of Natura Design to create podia for their frames out of mycelium and hemp. It noted: "When gently dried, the mycelium becomes inert and we are left with stunning pieces of furniture that look a lot like natural stone. The mycelium hyphae network weaves through the hemp and slowly consumes it which helps bind everything together into a solid form."

Strictly speaking, I shouldn't be including mycelium in my "built out of sunshine" category as fungi are not plants, do not have chlorophyll, and do not need sunlight. But as Carl Linnaeus, the father of modern taxonomy who considered them plants, said, "Plants grow and live; animals grow, live and feel." And as editorial director Melissa Breyer has noted many times, trees and plants grow, live, and feel, so these old definitions are breaking down. Plus, Linnaeus was wrong about lots of things so consider it a writer's license.

Elborne and Woodcroft have done something truly remarkable here: They have not built a store, they have grown it. But they didn't put down permanent roots; they designed it for deconstruction. They have used marvelous materials in innovative and unusual ways. This is not just a store—it is a textbook of sustainable design.

"Eyewear Brand MONC Is Reinventing the Store Experience." MONC Eyewear (Re)Considered. Press release.

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