Track lighting, usually used to illuminate art, lights up a living masterpiece in this Woodside, CA home. The plants, including heartleaf philodendron, parlor palm (Cholorphytm comosum), Epipremnym aureum, Marantha, pink Cordyline, peace lily, bromeliads, Calathea, and Fittonia, are grown in two layers of Growtex felt, which is derived from recycled plastic water bottles. Water is pumped to the top from a reservoir at the base of the wall and drips down to saturate the felt and the plant’s roots. Design: David Brenner, Installation: Habitat Horticulture, www.habitathorticulture.com.