" Or the officer's epaulets, circa 1820: "embroidered with gilt-metal thread in scrolling foliate designs, six-pointed silver metallic stars and gilt-brass buttons.
"They're living walls, and they come in all sorts of colors, not just green, " Richard Sabin of BioTecture told CNN, and whose walls have been incorporated in Gold and Silver Gilt medal-winning gardens at the Royal Horticultural Society's Chelsea Flower Show, London.