GreenhouseA mundane 1963 tract house taunted this landscape architect for months. One after another trees were planted somewhat haphazardly at first. A forest emerged. The house was then ripped open and exterior walls turned into glass. Most of the materials, with the exception of the gravel, were salvaged from on site or other nearby projects.The garden survives on a few hours of irrigation a month during the summer. All the downspouts were removed and replaced with rain chains and all impervious surfaces fragmented to allow permeability. With multi-layerd plantings the garden acts as a giant sponge, soaking up rainfall.Photos: Andri Beauchamp